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Finding the Fourth Proportional to 8,879.77, 13,319.65 and 2,639.75

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Solution

The fourth proportional to 8,879.77, 13,319.65 and 2,639.75 is: 3,959.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.77 : 13,319.65 = 2,639.75 : x
  2. Step 2: Convert to fraction form
    8,879.77/13,319.65 = 2,639.75/x
  3. Step 3: Cross multiply
    8,879.77x = 13,319.65 × 2,639.75
  4. Step 4: Simplify right side
    8,879.77x = 35,160,572.79
  5. Step 5: Solve for x
    x = 35,160,572.79/8,879.77
  6. Step 6: Final answer
    x = 3,959.63

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Similar ratio
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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.