Home / 1,949.89-2,690.84-1,065.69

Finding the Fourth Proportional to 1,949.89, 2,690.84 and 1,065.69

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Solution

The fourth proportional to 1,949.89, 2,690.84 and 1,065.69 is: 1,470.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.89 : 2,690.84 = 1,065.69 : x
  2. Step 2: Convert to fraction form
    1,949.89/2,690.84 = 1,065.69/x
  3. Step 3: Cross multiply
    1,949.89x = 2,690.84 × 1,065.69
  4. Step 4: Simplify right side
    1,949.89x = 2,867,598.62
  5. Step 5: Solve for x
    x = 2,867,598.62/1,949.89
  6. Step 6: Final answer
    x = 1,470.65

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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.