Home / 8,875.84-12,249.60-5,520.80

Finding the Fourth Proportional to 8,875.84, 12,249.60 and 5,520.80

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Solution

The fourth proportional to 8,875.84, 12,249.60 and 5,520.80 is: 7,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875.84 : 12,249.60 = 5,520.80 : x
  2. Step 2: Convert to fraction form
    8,875.84/12,249.60 = 5,520.80/x
  3. Step 3: Cross multiply
    8,875.84x = 12,249.60 × 5,520.80
  4. Step 4: Simplify right side
    8,875.84x = 67,627,591.68
  5. Step 5: Solve for x
    x = 67,627,591.68/8,875.84
  6. Step 6: Final answer
    x = 7,619.29

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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.