Home / 1,440.20-2,160.39-574.50

Finding the Fourth Proportional to 1,440.20, 2,160.39 and 574.50

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Solution

The fourth proportional to 1,440.20, 2,160.39 and 574.50 is: 861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.20 : 2,160.39 = 574.50 : x
  2. Step 2: Convert to fraction form
    1,440.20/2,160.39 = 574.50/x
  3. Step 3: Cross multiply
    1,440.20x = 2,160.39 × 574.50
  4. Step 4: Simplify right side
    1,440.20x = 1,241,144.06
  5. Step 5: Solve for x
    x = 1,241,144.06/1,440.20
  6. Step 6: Final answer
    x = 861.79

Related Problems

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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.