Home / 2,928.92-4,042.38-1,670

Finding the Fourth Proportional to 2,928.92, 4,042.38 and 1,670

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Solution

The fourth proportional to 2,928.92, 4,042.38 and 1,670 is: 2,304.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.92 : 4,042.38 = 1,670 : x
  2. Step 2: Convert to fraction form
    2,928.92/4,042.38 = 1,670/x
  3. Step 3: Cross multiply
    2,928.92x = 4,042.38 × 1,670
  4. Step 4: Simplify right side
    2,928.92x = 6,750,774.60
  5. Step 5: Solve for x
    x = 6,750,774.60/2,928.92
  6. Step 6: Final answer
    x = 2,304.87

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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.