Home / 1,520.16-2,280.36-424.53

Finding the Fourth Proportional to 1,520.16, 2,280.36 and 424.53

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Solution

The fourth proportional to 1,520.16, 2,280.36 and 424.53 is: 636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.16 : 2,280.36 = 424.53 : x
  2. Step 2: Convert to fraction form
    1,520.16/2,280.36 = 424.53/x
  3. Step 3: Cross multiply
    1,520.16x = 2,280.36 × 424.53
  4. Step 4: Simplify right side
    1,520.16x = 968,081.23
  5. Step 5: Solve for x
    x = 968,081.23/1,520.16
  6. Step 6: Final answer
    x = 636.83

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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.