Home / 7,408.30-11,112.45-7,116.70

Finding the Fourth Proportional to 7,408.30, 11,112.45 and 7,116.70

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Solution

The fourth proportional to 7,408.30, 11,112.45 and 7,116.70 is: 10,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.30 : 11,112.45 = 7,116.70 : x
  2. Step 2: Convert to fraction form
    7,408.30/11,112.45 = 7,116.70/x
  3. Step 3: Cross multiply
    7,408.30x = 11,112.45 × 7,116.70
  4. Step 4: Simplify right side
    7,408.30x = 79,083,972.92
  5. Step 5: Solve for x
    x = 79,083,972.92/7,408.30
  6. Step 6: Final answer
    x = 10,675.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.