Home / 1,520.07-2,280.11-424.47

Finding the Fourth Proportional to 1,520.07, 2,280.11 and 424.47

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Solution

The fourth proportional to 1,520.07, 2,280.11 and 424.47 is: 636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.07 : 2,280.11 = 424.47 : x
  2. Step 2: Convert to fraction form
    1,520.07/2,280.11 = 424.47/x
  3. Step 3: Cross multiply
    1,520.07x = 2,280.11 × 424.47
  4. Step 4: Simplify right side
    1,520.07x = 967,826.89
  5. Step 5: Solve for x
    x = 967,826.89/1,520.07
  6. Step 6: Final answer
    x = 636.70

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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.