Home / 3,156.60-4,351.56-2,209.47

Finding the Fourth Proportional to 3,156.60, 4,351.56 and 2,209.47

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Solution

The fourth proportional to 3,156.60, 4,351.56 and 2,209.47 is: 3,045.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.60 : 4,351.56 = 2,209.47 : x
  2. Step 2: Convert to fraction form
    3,156.60/4,351.56 = 2,209.47/x
  3. Step 3: Cross multiply
    3,156.60x = 4,351.56 × 2,209.47
  4. Step 4: Simplify right side
    3,156.60x = 9,614,641.27
  5. Step 5: Solve for x
    x = 9,614,641.27/3,156.60
  6. Step 6: Final answer
    x = 3,045.89

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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.