Home / 3,687.12-5,082.28-2,889.08

Finding the Fourth Proportional to 3,687.12, 5,082.28 and 2,889.08

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Solution

The fourth proportional to 3,687.12, 5,082.28 and 2,889.08 is: 3,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.12 : 5,082.28 = 2,889.08 : x
  2. Step 2: Convert to fraction form
    3,687.12/5,082.28 = 2,889.08/x
  3. Step 3: Cross multiply
    3,687.12x = 5,082.28 × 2,889.08
  4. Step 4: Simplify right side
    3,687.12x = 14,683,113.50
  5. Step 5: Solve for x
    x = 14,683,113.50/3,687.12
  6. Step 6: Final answer
    x = 3,982.27

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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.