Home / 1,350.16-2,025.25-425.80

Finding the Fourth Proportional to 1,350.16, 2,025.25 and 425.80

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Solution

The fourth proportional to 1,350.16, 2,025.25 and 425.80 is: 638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.16 : 2,025.25 = 425.80 : x
  2. Step 2: Convert to fraction form
    1,350.16/2,025.25 = 425.80/x
  3. Step 3: Cross multiply
    1,350.16x = 2,025.25 × 425.80
  4. Step 4: Simplify right side
    1,350.16x = 862,351.45
  5. Step 5: Solve for x
    x = 862,351.45/1,350.16
  6. Step 6: Final answer
    x = 638.70

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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.