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Finding the Fourth Proportional to 8,759.92, 13,155.48 and 8,407.52

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Solution

The fourth proportional to 8,759.92, 13,155.48 and 8,407.52 is: 12,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.92 : 13,155.48 = 8,407.52 : x
  2. Step 2: Convert to fraction form
    8,759.92/13,155.48 = 8,407.52/x
  3. Step 3: Cross multiply
    8,759.92x = 13,155.48 × 8,407.52
  4. Step 4: Simplify right side
    8,759.92x = 110,604,961.21
  5. Step 5: Solve for x
    x = 110,604,961.21/8,759.92
  6. Step 6: Final answer
    x = 12,626.25

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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.