Home / 1,520.63-2,280.67-425.10

Finding the Fourth Proportional to 1,520.63, 2,280.67 and 425.10

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Solution

The fourth proportional to 1,520.63, 2,280.67 and 425.10 is: 637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.63 : 2,280.67 = 425.10 : x
  2. Step 2: Convert to fraction form
    1,520.63/2,280.67 = 425.10/x
  3. Step 3: Cross multiply
    1,520.63x = 2,280.67 × 425.10
  4. Step 4: Simplify right side
    1,520.63x = 969,511.75
  5. Step 5: Solve for x
    x = 969,511.75/1,520.63
  6. Step 6: Final answer
    x = 637.57

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Double scale
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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.