Home / 2,082.40-2,873.72-1,138.18

Finding the Fourth Proportional to 2,082.40, 2,873.72 and 1,138.18

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Solution

The fourth proportional to 2,082.40, 2,873.72 and 1,138.18 is: 1,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.40 : 2,873.72 = 1,138.18 : x
  2. Step 2: Convert to fraction form
    2,082.40/2,873.72 = 1,138.18/x
  3. Step 3: Cross multiply
    2,082.40x = 2,873.72 × 1,138.18
  4. Step 4: Simplify right side
    2,082.40x = 3,270,806.29
  5. Step 5: Solve for x
    x = 3,270,806.29/2,082.40
  6. Step 6: Final answer
    x = 1,570.69

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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.