Home / 1,939.60-2,677.94-1,490.68

Finding the Fourth Proportional to 1,939.60, 2,677.94 and 1,490.68

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Solution

The fourth proportional to 1,939.60, 2,677.94 and 1,490.68 is: 2,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.60 : 2,677.94 = 1,490.68 : x
  2. Step 2: Convert to fraction form
    1,939.60/2,677.94 = 1,490.68/x
  3. Step 3: Cross multiply
    1,939.60x = 2,677.94 × 1,490.68
  4. Step 4: Simplify right side
    1,939.60x = 3,991,951.60
  5. Step 5: Solve for x
    x = 3,991,951.60/1,939.60
  6. Step 6: Final answer
    x = 2,058.13

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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.