Home / 5,612.50-8,419.97-2,149.75

Finding the Fourth Proportional to 5,612.50, 8,419.97 and 2,149.75

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Solution

The fourth proportional to 5,612.50, 8,419.97 and 2,149.75 is: 3,225.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.50 : 8,419.97 = 2,149.75 : x
  2. Step 2: Convert to fraction form
    5,612.50/8,419.97 = 2,149.75/x
  3. Step 3: Cross multiply
    5,612.50x = 8,419.97 × 2,149.75
  4. Step 4: Simplify right side
    5,612.50x = 18,100,830.51
  5. Step 5: Solve for x
    x = 18,100,830.51/5,612.50
  6. Step 6: Final answer
    x = 3,225.09

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Half scale
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Double scale
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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.