Home / 1,520.13-2,280.24-424.44

Finding the Fourth Proportional to 1,520.13, 2,280.24 and 424.44

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Solution

The fourth proportional to 1,520.13, 2,280.24 and 424.44 is: 636.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.13 : 2,280.24 = 424.44 : x
  2. Step 2: Convert to fraction form
    1,520.13/2,280.24 = 424.44/x
  3. Step 3: Cross multiply
    1,520.13x = 2,280.24 × 424.44
  4. Step 4: Simplify right side
    1,520.13x = 967,825.07
  5. Step 5: Solve for x
    x = 967,825.07/1,520.13
  6. Step 6: Final answer
    x = 636.67

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Double scale
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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.