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Finding the Fourth Proportional to 7,939.58, 10,948.83 and 7,311.74

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Solution

The fourth proportional to 7,939.58, 10,948.83 and 7,311.74 is: 10,083.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.58 : 10,948.83 = 7,311.74 : x
  2. Step 2: Convert to fraction form
    7,939.58/10,948.83 = 7,311.74/x
  3. Step 3: Cross multiply
    7,939.58x = 10,948.83 × 7,311.74
  4. Step 4: Simplify right side
    7,939.58x = 80,054,998.26
  5. Step 5: Solve for x
    x = 80,054,998.26/7,939.58
  6. Step 6: Final answer
    x = 10,083.03

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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.