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Finding the Fourth Proportional to 6,347.57, 8,759.57 and 3,515.15

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Solution

The fourth proportional to 6,347.57, 8,759.57 and 3,515.15 is: 4,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,347.57 : 8,759.57 = 3,515.15 : x
  2. Step 2: Convert to fraction form
    6,347.57/8,759.57 = 3,515.15/x
  3. Step 3: Cross multiply
    6,347.57x = 8,759.57 × 3,515.15
  4. Step 4: Simplify right side
    6,347.57x = 30,791,141.11
  5. Step 5: Solve for x
    x = 30,791,141.11/6,347.57
  6. Step 6: Final answer
    x = 4,850.86

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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.