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Finding the Fourth Proportional to 8,748.60, 12,072.53 and 5,211.14

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Solution

The fourth proportional to 8,748.60, 12,072.53 and 5,211.14 is: 7,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.60 : 12,072.53 = 5,211.14 : x
  2. Step 2: Convert to fraction form
    8,748.60/12,072.53 = 5,211.14/x
  3. Step 3: Cross multiply
    8,748.60x = 12,072.53 × 5,211.14
  4. Step 4: Simplify right side
    8,748.60x = 62,911,557.57
  5. Step 5: Solve for x
    x = 62,911,557.57/8,748.60
  6. Step 6: Final answer
    x = 7,191.04

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1.5x scale

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.