Home / 2,126.87-3,184.62-1,248.65

Finding the Fourth Proportional to 2,126.87, 3,184.62 and 1,248.65

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Solution

The fourth proportional to 2,126.87, 3,184.62 and 1,248.65 is: 1,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.87 : 3,184.62 = 1,248.65 : x
  2. Step 2: Convert to fraction form
    2,126.87/3,184.62 = 1,248.65/x
  3. Step 3: Cross multiply
    2,126.87x = 3,184.62 × 1,248.65
  4. Step 4: Simplify right side
    2,126.87x = 3,976,459.84
  5. Step 5: Solve for x
    x = 3,976,459.84/2,126.87
  6. Step 6: Final answer
    x = 1,869.63

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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.