Home / 1,432.21-2,146.65-1,172.65

Finding the Fourth Proportional to 1,432.21, 2,146.65 and 1,172.65

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Solution

The fourth proportional to 1,432.21, 2,146.65 and 1,172.65 is: 1,757.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.21 : 2,146.65 = 1,172.65 : x
  2. Step 2: Convert to fraction form
    1,432.21/2,146.65 = 1,172.65/x
  3. Step 3: Cross multiply
    1,432.21x = 2,146.65 × 1,172.65
  4. Step 4: Simplify right side
    1,432.21x = 2,517,269.12
  5. Step 5: Solve for x
    x = 2,517,269.12/1,432.21
  6. Step 6: Final answer
    x = 1,757.61

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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.