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Finding the Fourth Proportional to 8,880.40, 13,331.40 and 6,671.80

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Solution

The fourth proportional to 8,880.40, 13,331.40 and 6,671.80 is: 10,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.40 : 13,331.40 = 6,671.80 : x
  2. Step 2: Convert to fraction form
    8,880.40/13,331.40 = 6,671.80/x
  3. Step 3: Cross multiply
    8,880.40x = 13,331.40 × 6,671.80
  4. Step 4: Simplify right side
    8,880.40x = 88,944,434.52
  5. Step 5: Solve for x
    x = 88,944,434.52/8,880.40
  6. Step 6: Final answer
    x = 10,015.81

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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.