Home / 4,128.75-5,697.68-2,265.75

Finding the Fourth Proportional to 4,128.75, 5,697.68 and 2,265.75

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Solution

The fourth proportional to 4,128.75, 5,697.68 and 2,265.75 is: 3,126.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.75 : 5,697.68 = 2,265.75 : x
  2. Step 2: Convert to fraction form
    4,128.75/5,697.68 = 2,265.75/x
  3. Step 3: Cross multiply
    4,128.75x = 5,697.68 × 2,265.75
  4. Step 4: Simplify right side
    4,128.75x = 12,909,507.13
  5. Step 5: Solve for x
    x = 12,909,507.13/4,128.75
  6. Step 6: Final answer
    x = 3,126.74

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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.