Home / 1,517.01-2,275.53-421.46

Finding the Fourth Proportional to 1,517.01, 2,275.53 and 421.46

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Solution

The fourth proportional to 1,517.01, 2,275.53 and 421.46 is: 632.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.01 : 2,275.53 = 421.46 : x
  2. Step 2: Convert to fraction form
    1,517.01/2,275.53 = 421.46/x
  3. Step 3: Cross multiply
    1,517.01x = 2,275.53 × 421.46
  4. Step 4: Simplify right side
    1,517.01x = 959,037.25
  5. Step 5: Solve for x
    x = 959,037.25/1,517.01
  6. Step 6: Final answer
    x = 632.19

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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.