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Finding the Fourth Proportional to 2,125.93, 3,187.80 and 954.93

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Solution

The fourth proportional to 2,125.93, 3,187.80 and 954.93 is: 1,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.93 : 3,187.80 = 954.93 : x
  2. Step 2: Convert to fraction form
    2,125.93/3,187.80 = 954.93/x
  3. Step 3: Cross multiply
    2,125.93x = 3,187.80 × 954.93
  4. Step 4: Simplify right side
    2,125.93x = 3,044,125.85
  5. Step 5: Solve for x
    x = 3,044,125.85/2,125.93
  6. Step 6: Final answer
    x = 1,431.90

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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.