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Finding the Fourth Proportional to 1,543.41, 2,129.36 and 954.27

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Solution

The fourth proportional to 1,543.41, 2,129.36 and 954.27 is: 1,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.41 : 2,129.36 = 954.27 : x
  2. Step 2: Convert to fraction form
    1,543.41/2,129.36 = 954.27/x
  3. Step 3: Cross multiply
    1,543.41x = 2,129.36 × 954.27
  4. Step 4: Simplify right side
    1,543.41x = 2,031,979.60
  5. Step 5: Solve for x
    x = 2,031,979.60/1,543.41
  6. Step 6: Final answer
    x = 1,316.55

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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.