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Finding the Fourth Proportional to 8,947.44, 12,349.05 and 6,690.11

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Solution

The fourth proportional to 8,947.44, 12,349.05 and 6,690.11 is: 9,233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.44 : 12,349.05 = 6,690.11 : x
  2. Step 2: Convert to fraction form
    8,947.44/12,349.05 = 6,690.11/x
  3. Step 3: Cross multiply
    8,947.44x = 12,349.05 × 6,690.11
  4. Step 4: Simplify right side
    8,947.44x = 82,616,441.15
  5. Step 5: Solve for x
    x = 82,616,441.15/8,947.44
  6. Step 6: Final answer
    x = 9,233.53

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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.