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Finding the Fourth Proportional to 7,920.92, 10,926.09 and 5,087.34

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Solution

The fourth proportional to 7,920.92, 10,926.09 and 5,087.34 is: 7,017.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.92 : 10,926.09 = 5,087.34 : x
  2. Step 2: Convert to fraction form
    7,920.92/10,926.09 = 5,087.34/x
  3. Step 3: Cross multiply
    7,920.92x = 10,926.09 × 5,087.34
  4. Step 4: Simplify right side
    7,920.92x = 55,584,734.70
  5. Step 5: Solve for x
    x = 55,584,734.70/7,920.92
  6. Step 6: Final answer
    x = 7,017.46

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Similar ratio
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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.