Home / 1,521.18-2,281.48-425.34

Finding the Fourth Proportional to 1,521.18, 2,281.48 and 425.34

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Solution

The fourth proportional to 1,521.18, 2,281.48 and 425.34 is: 637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.18 : 2,281.48 = 425.34 : x
  2. Step 2: Convert to fraction form
    1,521.18/2,281.48 = 425.34/x
  3. Step 3: Cross multiply
    1,521.18x = 2,281.48 × 425.34
  4. Step 4: Simplify right side
    1,521.18x = 970,404.70
  5. Step 5: Solve for x
    x = 970,404.70/1,521.18
  6. Step 6: Final answer
    x = 637.93

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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.