Home / 1,543.03-2,129.42-945.62

Finding the Fourth Proportional to 1,543.03, 2,129.42 and 945.62

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Solution

The fourth proportional to 1,543.03, 2,129.42 and 945.62 is: 1,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.03 : 2,129.42 = 945.62 : x
  2. Step 2: Convert to fraction form
    1,543.03/2,129.42 = 945.62/x
  3. Step 3: Cross multiply
    1,543.03x = 2,129.42 × 945.62
  4. Step 4: Simplify right side
    1,543.03x = 2,013,622.14
  5. Step 5: Solve for x
    x = 2,013,622.14/1,543.03
  6. Step 6: Final answer
    x = 1,304.98

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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.