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Finding the Fourth Proportional to 2,125.78, 2,930.48 and 1,494.42

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Solution

The fourth proportional to 2,125.78, 2,930.48 and 1,494.42 is: 2,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.78 : 2,930.48 = 1,494.42 : x
  2. Step 2: Convert to fraction form
    2,125.78/2,930.48 = 1,494.42/x
  3. Step 3: Cross multiply
    2,125.78x = 2,930.48 × 1,494.42
  4. Step 4: Simplify right side
    2,125.78x = 4,379,367.92
  5. Step 5: Solve for x
    x = 4,379,367.92/2,125.78
  6. Step 6: Final answer
    x = 2,060.12

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1.5x scale

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.