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Finding the Fourth Proportional to 8,869.59, 12,239.62 and 5,090.13

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Solution

The fourth proportional to 8,869.59, 12,239.62 and 5,090.13 is: 7,024.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.59 : 12,239.62 = 5,090.13 : x
  2. Step 2: Convert to fraction form
    8,869.59/12,239.62 = 5,090.13/x
  3. Step 3: Cross multiply
    8,869.59x = 12,239.62 × 5,090.13
  4. Step 4: Simplify right side
    8,869.59x = 62,301,244.23
  5. Step 5: Solve for x
    x = 62,301,244.23/8,869.59
  6. Step 6: Final answer
    x = 7,024.14

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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.