Home / 3,057.60-4,218.12-1,938.24

Finding the Fourth Proportional to 3,057.60, 4,218.12 and 1,938.24

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Solution

The fourth proportional to 3,057.60, 4,218.12 and 1,938.24 is: 2,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.60 : 4,218.12 = 1,938.24 : x
  2. Step 2: Convert to fraction form
    3,057.60/4,218.12 = 1,938.24/x
  3. Step 3: Cross multiply
    3,057.60x = 4,218.12 × 1,938.24
  4. Step 4: Simplify right side
    3,057.60x = 8,175,728.91
  5. Step 5: Solve for x
    x = 8,175,728.91/3,057.60
  6. Step 6: Final answer
    x = 2,673.90

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Half scale
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Double scale
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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.