Home / 2,839.40-3,917.12-1,894.29

Finding the Fourth Proportional to 2,839.40, 3,917.12 and 1,894.29

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Solution

The fourth proportional to 2,839.40, 3,917.12 and 1,894.29 is: 2,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.40 : 3,917.12 = 1,894.29 : x
  2. Step 2: Convert to fraction form
    2,839.40/3,917.12 = 1,894.29/x
  3. Step 3: Cross multiply
    2,839.40x = 3,917.12 × 1,894.29
  4. Step 4: Simplify right side
    2,839.40x = 7,420,151.77
  5. Step 5: Solve for x
    x = 7,420,151.77/2,839.40
  6. Step 6: Final answer
    x = 2,613.29

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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.