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Finding the Fourth Proportional to 7,865.80, 10,854.48 and 5,029.18

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Solution

The fourth proportional to 7,865.80, 10,854.48 and 5,029.18 is: 6,940.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.80 : 10,854.48 = 5,029.18 : x
  2. Step 2: Convert to fraction form
    7,865.80/10,854.48 = 5,029.18/x
  3. Step 3: Cross multiply
    7,865.80x = 10,854.48 × 5,029.18
  4. Step 4: Simplify right side
    7,865.80x = 54,589,133.73
  5. Step 5: Solve for x
    x = 54,589,133.73/7,865.80
  6. Step 6: Final answer
    x = 6,940.06

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1.5x scale

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.