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Finding the Fourth Proportional to 6,405.76, 8,839.97 and 3,573.30

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Solution

The fourth proportional to 6,405.76, 8,839.97 and 3,573.30 is: 4,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.76 : 8,839.97 = 3,573.30 : x
  2. Step 2: Convert to fraction form
    6,405.76/8,839.97 = 3,573.30/x
  3. Step 3: Cross multiply
    6,405.76x = 8,839.97 × 3,573.30
  4. Step 4: Simplify right side
    6,405.76x = 31,587,864.80
  5. Step 5: Solve for x
    x = 31,587,864.80/6,405.76
  6. Step 6: Final answer
    x = 4,931.17

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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.