Home / 1,659.89-2,290.65-913.92

Finding the Fourth Proportional to 1,659.89, 2,290.65 and 913.92

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Solution

The fourth proportional to 1,659.89, 2,290.65 and 913.92 is: 1,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.89 : 2,290.65 = 913.92 : x
  2. Step 2: Convert to fraction form
    1,659.89/2,290.65 = 913.92/x
  3. Step 3: Cross multiply
    1,659.89x = 2,290.65 × 913.92
  4. Step 4: Simplify right side
    1,659.89x = 2,093,470.85
  5. Step 5: Solve for x
    x = 2,093,470.85/1,659.89
  6. Step 6: Final answer
    x = 1,261.21

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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.