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Finding the Fourth Proportional to 7,868.26, 10,859.88 and 5,354.56

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Solution

The fourth proportional to 7,868.26, 10,859.88 and 5,354.56 is: 7,390.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.26 : 10,859.88 = 5,354.56 : x
  2. Step 2: Convert to fraction form
    7,868.26/10,859.88 = 5,354.56/x
  3. Step 3: Cross multiply
    7,868.26x = 10,859.88 × 5,354.56
  4. Step 4: Simplify right side
    7,868.26x = 58,149,879.05
  5. Step 5: Solve for x
    x = 58,149,879.05/7,868.26
  6. Step 6: Final answer
    x = 7,390.44

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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.