Home / 5,628.75-7,767.69-3,144.75

Finding the Fourth Proportional to 5,628.75, 7,767.69 and 3,144.75

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Solution

The fourth proportional to 5,628.75, 7,767.69 and 3,144.75 is: 4,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.75 : 7,767.69 = 3,144.75 : x
  2. Step 2: Convert to fraction form
    5,628.75/7,767.69 = 3,144.75/x
  3. Step 3: Cross multiply
    5,628.75x = 7,767.69 × 3,144.75
  4. Step 4: Simplify right side
    5,628.75x = 24,427,443.13
  5. Step 5: Solve for x
    x = 24,427,443.13/5,628.75
  6. Step 6: Final answer
    x = 4,339.76

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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.