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Finding the Fourth Proportional to 7,868.03, 10,857.80 and 4,331.17

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Solution

The fourth proportional to 7,868.03, 10,857.80 and 4,331.17 is: 5,976.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.03 : 10,857.80 = 4,331.17 : x
  2. Step 2: Convert to fraction form
    7,868.03/10,857.80 = 4,331.17/x
  3. Step 3: Cross multiply
    7,868.03x = 10,857.80 × 4,331.17
  4. Step 4: Simplify right side
    7,868.03x = 47,026,961.31
  5. Step 5: Solve for x
    x = 47,026,961.31/7,868.03
  6. Step 6: Final answer
    x = 5,976.97

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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.