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Finding the Fourth Proportional to 8,624.61, 12,947.85 and 7,334.28

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Solution

The fourth proportional to 8,624.61, 12,947.85 and 7,334.28 is: 11,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.61 : 12,947.85 = 7,334.28 : x
  2. Step 2: Convert to fraction form
    8,624.61/12,947.85 = 7,334.28/x
  3. Step 3: Cross multiply
    8,624.61x = 12,947.85 × 7,334.28
  4. Step 4: Simplify right side
    8,624.61x = 94,963,157.30
  5. Step 5: Solve for x
    x = 94,963,157.30/8,624.61
  6. Step 6: Final answer
    x = 11,010.72

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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.