Home / 5,142.89-7,714.69-2,545.13

Finding the Fourth Proportional to 5,142.89, 7,714.69 and 2,545.13

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Solution

The fourth proportional to 5,142.89, 7,714.69 and 2,545.13 is: 3,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.89 : 7,714.69 = 2,545.13 : x
  2. Step 2: Convert to fraction form
    5,142.89/7,714.69 = 2,545.13/x
  3. Step 3: Cross multiply
    5,142.89x = 7,714.69 × 2,545.13
  4. Step 4: Simplify right side
    5,142.89x = 19,634,844.02
  5. Step 5: Solve for x
    x = 19,634,844.02/5,142.89
  6. Step 6: Final answer
    x = 3,817.87

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1.5x scale

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.