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Finding the Fourth Proportional to 3,478.66, 4,800.40 and 2,082.18

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Solution

The fourth proportional to 3,478.66, 4,800.40 and 2,082.18 is: 2,873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.66 : 4,800.40 = 2,082.18 : x
  2. Step 2: Convert to fraction form
    3,478.66/4,800.40 = 2,082.18/x
  3. Step 3: Cross multiply
    3,478.66x = 4,800.40 × 2,082.18
  4. Step 4: Simplify right side
    3,478.66x = 9,995,296.87
  5. Step 5: Solve for x
    x = 9,995,296.87/3,478.66
  6. Step 6: Final answer
    x = 2,873.32

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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.