Home / 7,781.52-11,677.12-5,669.24

Finding the Fourth Proportional to 7,781.52, 11,677.12 and 5,669.24

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Solution

The fourth proportional to 7,781.52, 11,677.12 and 5,669.24 is: 8,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.52 : 11,677.12 = 5,669.24 : x
  2. Step 2: Convert to fraction form
    7,781.52/11,677.12 = 5,669.24/x
  3. Step 3: Cross multiply
    7,781.52x = 11,677.12 × 5,669.24
  4. Step 4: Simplify right side
    7,781.52x = 66,200,395.79
  5. Step 5: Solve for x
    x = 66,200,395.79/7,781.52
  6. Step 6: Final answer
    x = 8,507.39

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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.