Home / 1,543.74-2,129.18-945.58

Finding the Fourth Proportional to 1,543.74, 2,129.18 and 945.58

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Solution

The fourth proportional to 1,543.74, 2,129.18 and 945.58 is: 1,304.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.74 : 2,129.18 = 945.58 : x
  2. Step 2: Convert to fraction form
    1,543.74/2,129.18 = 945.58/x
  3. Step 3: Cross multiply
    1,543.74x = 2,129.18 × 945.58
  4. Step 4: Simplify right side
    1,543.74x = 2,013,310.02
  5. Step 5: Solve for x
    x = 2,013,310.02/1,543.74
  6. Step 6: Final answer
    x = 1,304.18

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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.