Home / 1,520.98-2,281.47-425.35

Finding the Fourth Proportional to 1,520.98, 2,281.47 and 425.35

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Solution

The fourth proportional to 1,520.98, 2,281.47 and 425.35 is: 638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.98 : 2,281.47 = 425.35 : x
  2. Step 2: Convert to fraction form
    1,520.98/2,281.47 = 425.35/x
  3. Step 3: Cross multiply
    1,520.98x = 2,281.47 × 425.35
  4. Step 4: Simplify right side
    1,520.98x = 970,424.52
  5. Step 5: Solve for x
    x = 970,424.52/1,520.98
  6. Step 6: Final answer
    x = 638.03

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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.