Home / 1,612.89-2,419.70-1,306.71

Finding the Fourth Proportional to 1,612.89, 2,419.70 and 1,306.71

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Solution

The fourth proportional to 1,612.89, 2,419.70 and 1,306.71 is: 1,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.89 : 2,419.70 = 1,306.71 : x
  2. Step 2: Convert to fraction form
    1,612.89/2,419.70 = 1,306.71/x
  3. Step 3: Cross multiply
    1,612.89x = 2,419.70 × 1,306.71
  4. Step 4: Simplify right side
    1,612.89x = 3,161,839.65
  5. Step 5: Solve for x
    x = 3,161,839.65/1,612.89
  6. Step 6: Final answer
    x = 1,960.36

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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.