Home / 4,138.25-5,710.80-2,275.25

Finding the Fourth Proportional to 4,138.25, 5,710.80 and 2,275.25

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Solution

The fourth proportional to 4,138.25, 5,710.80 and 2,275.25 is: 3,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.25 : 5,710.80 = 2,275.25 : x
  2. Step 2: Convert to fraction form
    4,138.25/5,710.80 = 2,275.25/x
  3. Step 3: Cross multiply
    4,138.25x = 5,710.80 × 2,275.25
  4. Step 4: Simplify right side
    4,138.25x = 12,993,497.70
  5. Step 5: Solve for x
    x = 12,993,497.70/4,138.25
  6. Step 6: Final answer
    x = 3,139.85

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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.