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Finding the Fourth Proportional to 3,988.92, 5,507.92 and 3,568.52

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Solution

The fourth proportional to 3,988.92, 5,507.92 and 3,568.52 is: 4,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.92 : 5,507.92 = 3,568.52 : x
  2. Step 2: Convert to fraction form
    3,988.92/5,507.92 = 3,568.52/x
  3. Step 3: Cross multiply
    3,988.92x = 5,507.92 × 3,568.52
  4. Step 4: Simplify right side
    3,988.92x = 19,655,122.68
  5. Step 5: Solve for x
    x = 19,655,122.68/3,988.92
  6. Step 6: Final answer
    x = 4,927.43

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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.