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Finding the Fourth Proportional to 3,499.52, 5,249.28 and 1,857.28

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Solution

The fourth proportional to 3,499.52, 5,249.28 and 1,857.28 is: 2,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,499.52 : 5,249.28 = 1,857.28 : x
  2. Step 2: Convert to fraction form
    3,499.52/5,249.28 = 1,857.28/x
  3. Step 3: Cross multiply
    3,499.52x = 5,249.28 × 1,857.28
  4. Step 4: Simplify right side
    3,499.52x = 9,749,382.76
  5. Step 5: Solve for x
    x = 9,749,382.76/3,499.52
  6. Step 6: Final answer
    x = 2,785.92

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.