Home / 5,645.20-8,467.80-5,280.70

Finding the Fourth Proportional to 5,645.20, 8,467.80 and 5,280.70

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Solution

The fourth proportional to 5,645.20, 8,467.80 and 5,280.70 is: 7,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.20 : 8,467.80 = 5,280.70 : x
  2. Step 2: Convert to fraction form
    5,645.20/8,467.80 = 5,280.70/x
  3. Step 3: Cross multiply
    5,645.20x = 8,467.80 × 5,280.70
  4. Step 4: Simplify right side
    5,645.20x = 44,715,911.46
  5. Step 5: Solve for x
    x = 44,715,911.46/5,645.20
  6. Step 6: Final answer
    x = 7,921.05

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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.