Home / 3,932.64-5,428.76-2,988.59

Finding the Fourth Proportional to 3,932.64, 5,428.76 and 2,988.59

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Solution

The fourth proportional to 3,932.64, 5,428.76 and 2,988.59 is: 4,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.64 : 5,428.76 = 2,988.59 : x
  2. Step 2: Convert to fraction form
    3,932.64/5,428.76 = 2,988.59/x
  3. Step 3: Cross multiply
    3,932.64x = 5,428.76 × 2,988.59
  4. Step 4: Simplify right side
    3,932.64x = 16,224,295.76
  5. Step 5: Solve for x
    x = 16,224,295.76/3,932.64
  6. Step 6: Final answer
    x = 4,125.55

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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.