Home / 1,949.18-2,689.10-1,240.84

Finding the Fourth Proportional to 1,949.18, 2,689.10 and 1,240.84

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Solution

The fourth proportional to 1,949.18, 2,689.10 and 1,240.84 is: 1,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.18 : 2,689.10 = 1,240.84 : x
  2. Step 2: Convert to fraction form
    1,949.18/2,689.10 = 1,240.84/x
  3. Step 3: Cross multiply
    1,949.18x = 2,689.10 × 1,240.84
  4. Step 4: Simplify right side
    1,949.18x = 3,336,742.84
  5. Step 5: Solve for x
    x = 3,336,742.84/1,949.18
  6. Step 6: Final answer
    x = 1,711.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.