Home / 3,868.65-5,340.00-2,275.23

Finding the Fourth Proportional to 3,868.65, 5,340.00 and 2,275.23

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Solution

The fourth proportional to 3,868.65, 5,340.00 and 2,275.23 is: 3,140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.65 : 5,340.00 = 2,275.23 : x
  2. Step 2: Convert to fraction form
    3,868.65/5,340.00 = 2,275.23/x
  3. Step 3: Cross multiply
    3,868.65x = 5,340.00 × 2,275.23
  4. Step 4: Simplify right side
    3,868.65x = 12,149,711.70
  5. Step 5: Solve for x
    x = 12,149,711.70/3,868.65
  6. Step 6: Final answer
    x = 3,140.56

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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.