Home / 3,082.32-4,253.64-1,685.20

Finding the Fourth Proportional to 3,082.32, 4,253.64 and 1,685.20

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Solution

The fourth proportional to 3,082.32, 4,253.64 and 1,685.20 is: 2,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.32 : 4,253.64 = 1,685.20 : x
  2. Step 2: Convert to fraction form
    3,082.32/4,253.64 = 1,685.20/x
  3. Step 3: Cross multiply
    3,082.32x = 4,253.64 × 1,685.20
  4. Step 4: Simplify right side
    3,082.32x = 7,168,234.13
  5. Step 5: Solve for x
    x = 7,168,234.13/3,082.32
  6. Step 6: Final answer
    x = 2,325.60

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.