Home / 1,517.65-2,276.60-421.93

Finding the Fourth Proportional to 1,517.65, 2,276.60 and 421.93

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Solution

The fourth proportional to 1,517.65, 2,276.60 and 421.93 is: 632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.65 : 2,276.60 = 421.93 : x
  2. Step 2: Convert to fraction form
    1,517.65/2,276.60 = 421.93/x
  3. Step 3: Cross multiply
    1,517.65x = 2,276.60 × 421.93
  4. Step 4: Simplify right side
    1,517.65x = 960,565.84
  5. Step 5: Solve for x
    x = 960,565.84/1,517.65
  6. Step 6: Final answer
    x = 632.93

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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.