Home / 1,620.11-2,422.55-1,156.45

Finding the Fourth Proportional to 1,620.11, 2,422.55 and 1,156.45

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Solution

The fourth proportional to 1,620.11, 2,422.55 and 1,156.45 is: 1,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.11 : 2,422.55 = 1,156.45 : x
  2. Step 2: Convert to fraction form
    1,620.11/2,422.55 = 1,156.45/x
  3. Step 3: Cross multiply
    1,620.11x = 2,422.55 × 1,156.45
  4. Step 4: Simplify right side
    1,620.11x = 2,801,557.95
  5. Step 5: Solve for x
    x = 2,801,557.95/1,620.11
  6. Step 6: Final answer
    x = 1,729.24

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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.