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Finding the Fourth Proportional to 8,554.57, 12,802.65 and 7,169.47

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Solution

The fourth proportional to 8,554.57, 12,802.65 and 7,169.47 is: 10,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,554.57 : 12,802.65 = 7,169.47 : x
  2. Step 2: Convert to fraction form
    8,554.57/12,802.65 = 7,169.47/x
  3. Step 3: Cross multiply
    8,554.57x = 12,802.65 × 7,169.47
  4. Step 4: Simplify right side
    8,554.57x = 91,788,215.10
  5. Step 5: Solve for x
    x = 91,788,215.10/8,554.57
  6. Step 6: Final answer
    x = 10,729.73

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1.5x scale

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.