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Finding the Fourth Proportional to 8,728.44, 12,046.50 and 5,748.76

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Solution

The fourth proportional to 8,728.44, 12,046.50 and 5,748.76 is: 7,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.44 : 12,046.50 = 5,748.76 : x
  2. Step 2: Convert to fraction form
    8,728.44/12,046.50 = 5,748.76/x
  3. Step 3: Cross multiply
    8,728.44x = 12,046.50 × 5,748.76
  4. Step 4: Simplify right side
    8,728.44x = 69,252,437.34
  5. Step 5: Solve for x
    x = 69,252,437.34/8,728.44
  6. Step 6: Final answer
    x = 7,934.11

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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.