Home / 3,139.36-4,710.56-1,472.78

Finding the Fourth Proportional to 3,139.36, 4,710.56 and 1,472.78

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Solution

The fourth proportional to 3,139.36, 4,710.56 and 1,472.78 is: 2,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.36 : 4,710.56 = 1,472.78 : x
  2. Step 2: Convert to fraction form
    3,139.36/4,710.56 = 1,472.78/x
  3. Step 3: Cross multiply
    3,139.36x = 4,710.56 × 1,472.78
  4. Step 4: Simplify right side
    3,139.36x = 6,937,618.56
  5. Step 5: Solve for x
    x = 6,937,618.56/3,139.36
  6. Step 6: Final answer
    x = 2,209.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.