Home / 2,082.15-3,117.15-2,021.40

Finding the Fourth Proportional to 2,082.15, 3,117.15 and 2,021.40

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Solution

The fourth proportional to 2,082.15, 3,117.15 and 2,021.40 is: 3,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.15 : 3,117.15 = 2,021.40 : x
  2. Step 2: Convert to fraction form
    2,082.15/3,117.15 = 2,021.40/x
  3. Step 3: Cross multiply
    2,082.15x = 3,117.15 × 2,021.40
  4. Step 4: Simplify right side
    2,082.15x = 6,301,007.01
  5. Step 5: Solve for x
    x = 6,301,007.01/2,082.15
  6. Step 6: Final answer
    x = 3,026.20

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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.