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Finding the Fourth Proportional to 8,812.40, 12,148.68 and 8,579.12

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Solution

The fourth proportional to 8,812.40, 12,148.68 and 8,579.12 is: 11,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.40 : 12,148.68 = 8,579.12 : x
  2. Step 2: Convert to fraction form
    8,812.40/12,148.68 = 8,579.12/x
  3. Step 3: Cross multiply
    8,812.40x = 12,148.68 × 8,579.12
  4. Step 4: Simplify right side
    8,812.40x = 104,224,983.56
  5. Step 5: Solve for x
    x = 104,224,983.56/8,812.40
  6. Step 6: Final answer
    x = 11,827.08

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Similar ratio
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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.