Home / 1,949.85-2,690.78-1,065.64

Finding the Fourth Proportional to 1,949.85, 2,690.78 and 1,065.64

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Solution

The fourth proportional to 1,949.85, 2,690.78 and 1,065.64 is: 1,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.85 : 2,690.78 = 1,065.64 : x
  2. Step 2: Convert to fraction form
    1,949.85/2,690.78 = 1,065.64/x
  3. Step 3: Cross multiply
    1,949.85x = 2,690.78 × 1,065.64
  4. Step 4: Simplify right side
    1,949.85x = 2,867,384.02
  5. Step 5: Solve for x
    x = 2,867,384.02/1,949.85
  6. Step 6: Final answer
    x = 1,470.57

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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.