Home / 2,281.45-3,422.18-638.00

Finding the Fourth Proportional to 2,281.45, 3,422.18 and 638.00

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Solution

The fourth proportional to 2,281.45, 3,422.18 and 638.00 is: 956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.45 : 3,422.18 = 638.00 : x
  2. Step 2: Convert to fraction form
    2,281.45/3,422.18 = 638.00/x
  3. Step 3: Cross multiply
    2,281.45x = 3,422.18 × 638.00
  4. Step 4: Simplify right side
    2,281.45x = 2,183,333.73
  5. Step 5: Solve for x
    x = 2,183,333.73/2,281.45
  6. Step 6: Final answer
    x = 956.99

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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.