Home / 3,129.02-4,691.40-1,279.59

Finding the Fourth Proportional to 3,129.02, 4,691.40 and 1,279.59

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Solution

The fourth proportional to 3,129.02, 4,691.40 and 1,279.59 is: 1,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.02 : 4,691.40 = 1,279.59 : x
  2. Step 2: Convert to fraction form
    3,129.02/4,691.40 = 1,279.59/x
  3. Step 3: Cross multiply
    3,129.02x = 4,691.40 × 1,279.59
  4. Step 4: Simplify right side
    3,129.02x = 6,003,068.53
  5. Step 5: Solve for x
    x = 6,003,068.53/3,129.02
  6. Step 6: Final answer
    x = 1,918.51

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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.