Home / 3,165.44-4,748.16-857.12

Finding the Fourth Proportional to 3,165.44, 4,748.16 and 857.12

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Solution

The fourth proportional to 3,165.44, 4,748.16 and 857.12 is: 1,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.44 : 4,748.16 = 857.12 : x
  2. Step 2: Convert to fraction form
    3,165.44/4,748.16 = 857.12/x
  3. Step 3: Cross multiply
    3,165.44x = 4,748.16 × 857.12
  4. Step 4: Simplify right side
    3,165.44x = 4,069,742.90
  5. Step 5: Solve for x
    x = 4,069,742.90/3,165.44
  6. Step 6: Final answer
    x = 1,285.68

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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.