Home / 2,082.20-3,123.30-1,873.40

Finding the Fourth Proportional to 2,082.20, 3,123.30 and 1,873.40

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Solution

The fourth proportional to 2,082.20, 3,123.30 and 1,873.40 is: 2,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.20 : 3,123.30 = 1,873.40 : x
  2. Step 2: Convert to fraction form
    2,082.20/3,123.30 = 1,873.40/x
  3. Step 3: Cross multiply
    2,082.20x = 3,123.30 × 1,873.40
  4. Step 4: Simplify right side
    2,082.20x = 5,851,190.22
  5. Step 5: Solve for x
    x = 5,851,190.22/2,082.20
  6. Step 6: Final answer
    x = 2,810.10

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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.