Home / 8,470.13-12,705.92-2,921.23

Finding the Fourth Proportional to 8,470.13, 12,705.92 and 2,921.23

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Solution

The fourth proportional to 8,470.13, 12,705.92 and 2,921.23 is: 4,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.13 : 12,705.92 = 2,921.23 : x
  2. Step 2: Convert to fraction form
    8,470.13/12,705.92 = 2,921.23/x
  3. Step 3: Cross multiply
    8,470.13x = 12,705.92 × 2,921.23
  4. Step 4: Simplify right side
    8,470.13x = 37,116,836.55
  5. Step 5: Solve for x
    x = 37,116,836.55/8,470.13
  6. Step 6: Final answer
    x = 4,382.09

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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.