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Finding the Fourth Proportional to 7,974.99, 10,994.08 and 5,609.79

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Solution

The fourth proportional to 7,974.99, 10,994.08 and 5,609.79 is: 7,733.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.99 : 10,994.08 = 5,609.79 : x
  2. Step 2: Convert to fraction form
    7,974.99/10,994.08 = 5,609.79/x
  3. Step 3: Cross multiply
    7,974.99x = 10,994.08 × 5,609.79
  4. Step 4: Simplify right side
    7,974.99x = 61,674,480.04
  5. Step 5: Solve for x
    x = 61,674,480.04/7,974.99
  6. Step 6: Final answer
    x = 7,733.49

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Half scale
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Double scale
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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.