Home / 3,868.65-5,338.98-2,190.23

Finding the Fourth Proportional to 3,868.65, 5,338.98 and 2,190.23

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Solution

The fourth proportional to 3,868.65, 5,338.98 and 2,190.23 is: 3,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.65 : 5,338.98 = 2,190.23 : x
  2. Step 2: Convert to fraction form
    3,868.65/5,338.98 = 2,190.23/x
  3. Step 3: Cross multiply
    3,868.65x = 5,338.98 × 2,190.23
  4. Step 4: Simplify right side
    3,868.65x = 11,693,594.17
  5. Step 5: Solve for x
    x = 11,693,594.17/3,868.65
  6. Step 6: Final answer
    x = 3,022.65

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Half scale
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Double scale
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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.