Home / 3,418.70-5,130.45-1,472.30

Finding the Fourth Proportional to 3,418.70, 5,130.45 and 1,472.30

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Solution

The fourth proportional to 3,418.70, 5,130.45 and 1,472.30 is: 2,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.70 : 5,130.45 = 1,472.30 : x
  2. Step 2: Convert to fraction form
    3,418.70/5,130.45 = 1,472.30/x
  3. Step 3: Cross multiply
    3,418.70x = 5,130.45 × 1,472.30
  4. Step 4: Simplify right side
    3,418.70x = 7,553,561.54
  5. Step 5: Solve for x
    x = 7,553,561.54/3,418.70
  6. Step 6: Final answer
    x = 2,209.48

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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.