Home / 8,778.54-12,117.51-5,241.78

Finding the Fourth Proportional to 8,778.54, 12,117.51 and 5,241.78

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Solution

The fourth proportional to 8,778.54, 12,117.51 and 5,241.78 is: 7,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.54 : 12,117.51 = 5,241.78 : x
  2. Step 2: Convert to fraction form
    8,778.54/12,117.51 = 5,241.78/x
  3. Step 3: Cross multiply
    8,778.54x = 12,117.51 × 5,241.78
  4. Step 4: Simplify right side
    8,778.54x = 63,517,321.57
  5. Step 5: Solve for x
    x = 63,517,321.57/8,778.54
  6. Step 6: Final answer
    x = 7,235.52

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Half scale
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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.