Home / 2,126.12-3,165.28-2,115.82

Finding the Fourth Proportional to 2,126.12, 3,165.28 and 2,115.82

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Solution

The fourth proportional to 2,126.12, 3,165.28 and 2,115.82 is: 3,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.12 : 3,165.28 = 2,115.82 : x
  2. Step 2: Convert to fraction form
    2,126.12/3,165.28 = 2,115.82/x
  3. Step 3: Cross multiply
    2,126.12x = 3,165.28 × 2,115.82
  4. Step 4: Simplify right side
    2,126.12x = 6,697,162.73
  5. Step 5: Solve for x
    x = 6,697,162.73/2,126.12
  6. Step 6: Final answer
    x = 3,149.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.