Home / 2,454.06-3,385.76-1,391.70

Finding the Fourth Proportional to 2,454.06, 3,385.76 and 1,391.70

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Solution

The fourth proportional to 2,454.06, 3,385.76 and 1,391.70 is: 1,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.06 : 3,385.76 = 1,391.70 : x
  2. Step 2: Convert to fraction form
    2,454.06/3,385.76 = 1,391.70/x
  3. Step 3: Cross multiply
    2,454.06x = 3,385.76 × 1,391.70
  4. Step 4: Simplify right side
    2,454.06x = 4,711,974.14
  5. Step 5: Solve for x
    x = 4,711,974.14/2,454.06
  6. Step 6: Final answer
    x = 1,920.08

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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.