Home / 7,461.64-11,191.61-2,781.81

Finding the Fourth Proportional to 7,461.64, 11,191.61 and 2,781.81

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Solution

The fourth proportional to 7,461.64, 11,191.61 and 2,781.81 is: 4,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,461.64 : 11,191.61 = 2,781.81 : x
  2. Step 2: Convert to fraction form
    7,461.64/11,191.61 = 2,781.81/x
  3. Step 3: Cross multiply
    7,461.64x = 11,191.61 × 2,781.81
  4. Step 4: Simplify right side
    7,461.64x = 31,132,892.38
  5. Step 5: Solve for x
    x = 31,132,892.38/7,461.64
  6. Step 6: Final answer
    x = 4,172.39

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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.