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Finding the Fourth Proportional to 6,318.76, 8,722.74 and 4,637.20

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Solution

The fourth proportional to 6,318.76, 8,722.74 and 4,637.20 is: 6,401.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.76 : 8,722.74 = 4,637.20 : x
  2. Step 2: Convert to fraction form
    6,318.76/8,722.74 = 4,637.20/x
  3. Step 3: Cross multiply
    6,318.76x = 8,722.74 × 4,637.20
  4. Step 4: Simplify right side
    6,318.76x = 40,449,089.93
  5. Step 5: Solve for x
    x = 40,449,089.93/6,318.76
  6. Step 6: Final answer
    x = 6,401.43

Related Problems

Find fourth proportional to 3,159.38, 4,361.37 and 2,318.60
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.