Home / 5,696.11-7,860.61-3,178.20

Finding the Fourth Proportional to 5,696.11, 7,860.61 and 3,178.20

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Solution

The fourth proportional to 5,696.11, 7,860.61 and 3,178.20 is: 4,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,696.11 : 7,860.61 = 3,178.20 : x
  2. Step 2: Convert to fraction form
    5,696.11/7,860.61 = 3,178.20/x
  3. Step 3: Cross multiply
    5,696.11x = 7,860.61 × 3,178.20
  4. Step 4: Simplify right side
    5,696.11x = 24,982,624.15
  5. Step 5: Solve for x
    x = 24,982,624.15/5,696.11
  6. Step 6: Final answer
    x = 4,385.91

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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.