Home / 1,620.27-2,431.26-754.50

Finding the Fourth Proportional to 1,620.27, 2,431.26 and 754.50

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Solution

The fourth proportional to 1,620.27, 2,431.26 and 754.50 is: 1,132.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.27 : 2,431.26 = 754.50 : x
  2. Step 2: Convert to fraction form
    1,620.27/2,431.26 = 754.50/x
  3. Step 3: Cross multiply
    1,620.27x = 2,431.26 × 754.50
  4. Step 4: Simplify right side
    1,620.27x = 1,834,385.67
  5. Step 5: Solve for x
    x = 1,834,385.67/1,620.27
  6. Step 6: Final answer
    x = 1,132.15

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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.