Home / 3,412.89-5,139.18-2,894.69

Finding the Fourth Proportional to 3,412.89, 5,139.18 and 2,894.69

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Solution

The fourth proportional to 3,412.89, 5,139.18 and 2,894.69 is: 4,358.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.89 : 5,139.18 = 2,894.69 : x
  2. Step 2: Convert to fraction form
    3,412.89/5,139.18 = 2,894.69/x
  3. Step 3: Cross multiply
    3,412.89x = 5,139.18 × 2,894.69
  4. Step 4: Simplify right side
    3,412.89x = 14,876,332.95
  5. Step 5: Solve for x
    x = 14,876,332.95/3,412.89
  6. Step 6: Final answer
    x = 4,358.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.