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Finding the Fourth Proportional to 7,681.87, 10,600.05 and 4,324.15

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Solution

The fourth proportional to 7,681.87, 10,600.05 and 4,324.15 is: 5,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.87 : 10,600.05 = 4,324.15 : x
  2. Step 2: Convert to fraction form
    7,681.87/10,600.05 = 4,324.15/x
  3. Step 3: Cross multiply
    7,681.87x = 10,600.05 × 4,324.15
  4. Step 4: Simplify right side
    7,681.87x = 45,836,206.21
  5. Step 5: Solve for x
    x = 45,836,206.21/7,681.87
  6. Step 6: Final answer
    x = 5,966.80

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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.