Home / 3,868.70-5,340.07-2,275.27

Finding the Fourth Proportional to 3,868.70, 5,340.07 and 2,275.27

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Solution

The fourth proportional to 3,868.70, 5,340.07 and 2,275.27 is: 3,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.70 : 5,340.07 = 2,275.27 : x
  2. Step 2: Convert to fraction form
    3,868.70/5,340.07 = 2,275.27/x
  3. Step 3: Cross multiply
    3,868.70x = 5,340.07 × 2,275.27
  4. Step 4: Simplify right side
    3,868.70x = 12,150,114.20
  5. Step 5: Solve for x
    x = 12,150,114.20/3,868.70
  6. Step 6: Final answer
    x = 3,140.62

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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.