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Finding the Fourth Proportional to 8,948.64, 12,430.09 and 8,805.60

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Solution

The fourth proportional to 8,948.64, 12,430.09 and 8,805.60 is: 12,231.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.64 : 12,430.09 = 8,805.60 : x
  2. Step 2: Convert to fraction form
    8,948.64/12,430.09 = 8,805.60/x
  3. Step 3: Cross multiply
    8,948.64x = 12,430.09 × 8,805.60
  4. Step 4: Simplify right side
    8,948.64x = 109,454,316.27
  5. Step 5: Solve for x
    x = 109,454,316.27/8,948.64
  6. Step 6: Final answer
    x = 12,231.39

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.