Home / 1,786.85-2,680.46-616.70

Finding the Fourth Proportional to 1,786.85, 2,680.46 and 616.70

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Solution

The fourth proportional to 1,786.85, 2,680.46 and 616.70 is: 925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.85 : 2,680.46 = 616.70 : x
  2. Step 2: Convert to fraction form
    1,786.85/2,680.46 = 616.70/x
  3. Step 3: Cross multiply
    1,786.85x = 2,680.46 × 616.70
  4. Step 4: Simplify right side
    1,786.85x = 1,653,036.60
  5. Step 5: Solve for x
    x = 1,653,036.60/1,786.85
  6. Step 6: Final answer
    x = 925.11

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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.