Home / 1,425.06-2,136.15-547.38

Finding the Fourth Proportional to 1,425.06, 2,136.15 and 547.38

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Solution

The fourth proportional to 1,425.06, 2,136.15 and 547.38 is: 820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.06 : 2,136.15 = 547.38 : x
  2. Step 2: Convert to fraction form
    1,425.06/2,136.15 = 547.38/x
  3. Step 3: Cross multiply
    1,425.06x = 2,136.15 × 547.38
  4. Step 4: Simplify right side
    1,425.06x = 1,169,285.79
  5. Step 5: Solve for x
    x = 1,169,285.79/1,425.06
  6. Step 6: Final answer
    x = 820.52

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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.