Home / 1,521.60-2,281.95-426.03

Finding the Fourth Proportional to 1,521.60, 2,281.95 and 426.03

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Solution

The fourth proportional to 1,521.60, 2,281.95 and 426.03 is: 638.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.60 : 2,281.95 = 426.03 : x
  2. Step 2: Convert to fraction form
    1,521.60/2,281.95 = 426.03/x
  3. Step 3: Cross multiply
    1,521.60x = 2,281.95 × 426.03
  4. Step 4: Simplify right side
    1,521.60x = 972,179.16
  5. Step 5: Solve for x
    x = 972,179.16/1,521.60
  6. Step 6: Final answer
    x = 638.92

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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.