Home / 1,680.66-2,319.27-934.65

Finding the Fourth Proportional to 1,680.66, 2,319.27 and 934.65

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Solution

The fourth proportional to 1,680.66, 2,319.27 and 934.65 is: 1,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.66 : 2,319.27 = 934.65 : x
  2. Step 2: Convert to fraction form
    1,680.66/2,319.27 = 934.65/x
  3. Step 3: Cross multiply
    1,680.66x = 2,319.27 × 934.65
  4. Step 4: Simplify right side
    1,680.66x = 2,167,702.20
  5. Step 5: Solve for x
    x = 2,167,702.20/1,680.66
  6. Step 6: Final answer
    x = 1,289.79

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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.