Home / 1,520.13-2,280.20-424.50

Finding the Fourth Proportional to 1,520.13, 2,280.20 and 424.50

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Solution

The fourth proportional to 1,520.13, 2,280.20 and 424.50 is: 636.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.13 : 2,280.20 = 424.50 : x
  2. Step 2: Convert to fraction form
    1,520.13/2,280.20 = 424.50/x
  3. Step 3: Cross multiply
    1,520.13x = 2,280.20 × 424.50
  4. Step 4: Simplify right side
    1,520.13x = 967,942.78
  5. Step 5: Solve for x
    x = 967,942.78/1,520.13
  6. Step 6: Final answer
    x = 636.75

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.