Home / 2,685.95-4,028.62-1,298.11

Finding the Fourth Proportional to 2,685.95, 4,028.62 and 1,298.11

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Solution

The fourth proportional to 2,685.95, 4,028.62 and 1,298.11 is: 1,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.95 : 4,028.62 = 1,298.11 : x
  2. Step 2: Convert to fraction form
    2,685.95/4,028.62 = 1,298.11/x
  3. Step 3: Cross multiply
    2,685.95x = 4,028.62 × 1,298.11
  4. Step 4: Simplify right side
    2,685.95x = 5,229,591.91
  5. Step 5: Solve for x
    x = 5,229,591.91/2,685.95
  6. Step 6: Final answer
    x = 1,947.02

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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.