Home / 1,455.20-2,008.16-825.73

Finding the Fourth Proportional to 1,455.20, 2,008.16 and 825.73

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Solution

The fourth proportional to 1,455.20, 2,008.16 and 825.73 is: 1,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.20 : 2,008.16 = 825.73 : x
  2. Step 2: Convert to fraction form
    1,455.20/2,008.16 = 825.73/x
  3. Step 3: Cross multiply
    1,455.20x = 2,008.16 × 825.73
  4. Step 4: Simplify right side
    1,455.20x = 1,658,191.90
  5. Step 5: Solve for x
    x = 1,658,191.90/1,455.20
  6. Step 6: Final answer
    x = 1,139.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.