Home / 2,385.80-3,292.82-1,391.66

Finding the Fourth Proportional to 2,385.80, 3,292.82 and 1,391.66

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Solution

The fourth proportional to 2,385.80, 3,292.82 and 1,391.66 is: 1,920.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.80 : 3,292.82 = 1,391.66 : x
  2. Step 2: Convert to fraction form
    2,385.80/3,292.82 = 1,391.66/x
  3. Step 3: Cross multiply
    2,385.80x = 3,292.82 × 1,391.66
  4. Step 4: Simplify right side
    2,385.80x = 4,582,485.88
  5. Step 5: Solve for x
    x = 4,582,485.88/2,385.80
  6. Step 6: Final answer
    x = 1,920.73

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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.