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Finding the Fourth Proportional to 8,617, 11,890.90 and 5,080.04

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Solution

The fourth proportional to 8,617, 11,890.90 and 5,080.04 is: 7,010.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617 : 11,890.90 = 5,080.04 : x
  2. Step 2: Convert to fraction form
    8,617/11,890.90 = 5,080.04/x
  3. Step 3: Cross multiply
    8,617x = 11,890.90 × 5,080.04
  4. Step 4: Simplify right side
    8,617x = 60,406,247.64
  5. Step 5: Solve for x
    x = 60,406,247.64/8,617
  6. Step 6: Final answer
    x = 7,010.13

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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.