Home / 2,082.10-3,123.15-1,377.40

Finding the Fourth Proportional to 2,082.10, 3,123.15 and 1,377.40

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Solution

The fourth proportional to 2,082.10, 3,123.15 and 1,377.40 is: 2,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.10 : 3,123.15 = 1,377.40 : x
  2. Step 2: Convert to fraction form
    2,082.10/3,123.15 = 1,377.40/x
  3. Step 3: Cross multiply
    2,082.10x = 3,123.15 × 1,377.40
  4. Step 4: Simplify right side
    2,082.10x = 4,301,826.81
  5. Step 5: Solve for x
    x = 4,301,826.81/2,082.10
  6. Step 6: Final answer
    x = 2,066.10

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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.