Home / 2,931.12-4,396.68-1,082.30

Finding the Fourth Proportional to 2,931.12, 4,396.68 and 1,082.30

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Solution

The fourth proportional to 2,931.12, 4,396.68 and 1,082.30 is: 1,623.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.12 : 4,396.68 = 1,082.30 : x
  2. Step 2: Convert to fraction form
    2,931.12/4,396.68 = 1,082.30/x
  3. Step 3: Cross multiply
    2,931.12x = 4,396.68 × 1,082.30
  4. Step 4: Simplify right side
    2,931.12x = 4,758,504.78
  5. Step 5: Solve for x
    x = 4,758,504.78/2,931.12
  6. Step 6: Final answer
    x = 1,623.44

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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.