Home / 5,115.80-7,673.70-4,994.30

Finding the Fourth Proportional to 5,115.80, 7,673.70 and 4,994.30

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Solution

The fourth proportional to 5,115.80, 7,673.70 and 4,994.30 is: 7,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.80 : 7,673.70 = 4,994.30 : x
  2. Step 2: Convert to fraction form
    5,115.80/7,673.70 = 4,994.30/x
  3. Step 3: Cross multiply
    5,115.80x = 7,673.70 × 4,994.30
  4. Step 4: Simplify right side
    5,115.80x = 38,324,759.91
  5. Step 5: Solve for x
    x = 38,324,759.91/5,115.80
  6. Step 6: Final answer
    x = 7,491.45

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Half scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.