Home / 8,435.72-12,631.50-5,505.80

Finding the Fourth Proportional to 8,435.72, 12,631.50 and 5,505.80

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Solution

The fourth proportional to 8,435.72, 12,631.50 and 5,505.80 is: 8,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.72 : 12,631.50 = 5,505.80 : x
  2. Step 2: Convert to fraction form
    8,435.72/12,631.50 = 5,505.80/x
  3. Step 3: Cross multiply
    8,435.72x = 12,631.50 × 5,505.80
  4. Step 4: Simplify right side
    8,435.72x = 69,546,512.70
  5. Step 5: Solve for x
    x = 69,546,512.70/8,435.72
  6. Step 6: Final answer
    x = 8,244.29

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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.