Home / 1,543.32-2,306.49-1,127.72

Finding the Fourth Proportional to 1,543.32, 2,306.49 and 1,127.72

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Solution

The fourth proportional to 1,543.32, 2,306.49 and 1,127.72 is: 1,685.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.32 : 2,306.49 = 1,127.72 : x
  2. Step 2: Convert to fraction form
    1,543.32/2,306.49 = 1,127.72/x
  3. Step 3: Cross multiply
    1,543.32x = 2,306.49 × 1,127.72
  4. Step 4: Simplify right side
    1,543.32x = 2,601,063.37
  5. Step 5: Solve for x
    x = 2,601,063.37/1,543.32
  6. Step 6: Final answer
    x = 1,685.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.