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Finding the Fourth Proportional to 6,393.56, 8,820.60 and 4,719

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Solution

The fourth proportional to 6,393.56, 8,820.60 and 4,719 is: 6,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.56 : 8,820.60 = 4,719 : x
  2. Step 2: Convert to fraction form
    6,393.56/8,820.60 = 4,719/x
  3. Step 3: Cross multiply
    6,393.56x = 8,820.60 × 4,719
  4. Step 4: Simplify right side
    6,393.56x = 41,624,411.40
  5. Step 5: Solve for x
    x = 41,624,411.40/6,393.56
  6. Step 6: Final answer
    x = 6,510.37

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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.