Home / 2,722.29-4,082.42-1,078.40

Finding the Fourth Proportional to 2,722.29, 4,082.42 and 1,078.40

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Solution

The fourth proportional to 2,722.29, 4,082.42 and 1,078.40 is: 1,617.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.29 : 4,082.42 = 1,078.40 : x
  2. Step 2: Convert to fraction form
    2,722.29/4,082.42 = 1,078.40/x
  3. Step 3: Cross multiply
    2,722.29x = 4,082.42 × 1,078.40
  4. Step 4: Simplify right side
    2,722.29x = 4,402,455.92
  5. Step 5: Solve for x
    x = 4,402,455.92/2,722.29
  6. Step 6: Final answer
    x = 1,617.19

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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.