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Finding the Fourth Proportional to 8,691.98, 13,026.47 and 4,744.94

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Solution

The fourth proportional to 8,691.98, 13,026.47 and 4,744.94 is: 7,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.98 : 13,026.47 = 4,744.94 : x
  2. Step 2: Convert to fraction form
    8,691.98/13,026.47 = 4,744.94/x
  3. Step 3: Cross multiply
    8,691.98x = 13,026.47 × 4,744.94
  4. Step 4: Simplify right side
    8,691.98x = 61,809,729.70
  5. Step 5: Solve for x
    x = 61,809,729.70/8,691.98
  6. Step 6: Final answer
    x = 7,111.13

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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.