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Finding the Fourth Proportional to 8,891.22, 12,270 and 5,114.46

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Solution

The fourth proportional to 8,891.22, 12,270 and 5,114.46 is: 7,058.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.22 : 12,270 = 5,114.46 : x
  2. Step 2: Convert to fraction form
    8,891.22/12,270 = 5,114.46/x
  3. Step 3: Cross multiply
    8,891.22x = 12,270 × 5,114.46
  4. Step 4: Simplify right side
    8,891.22x = 62,754,424.20
  5. Step 5: Solve for x
    x = 62,754,424.20/8,891.22
  6. Step 6: Final answer
    x = 7,058.02

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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.