Home / 7,420.18-11,135.71-5,976.76

Finding the Fourth Proportional to 7,420.18, 11,135.71 and 5,976.76

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Solution

The fourth proportional to 7,420.18, 11,135.71 and 5,976.76 is: 8,969.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.18 : 11,135.71 = 5,976.76 : x
  2. Step 2: Convert to fraction form
    7,420.18/11,135.71 = 5,976.76/x
  3. Step 3: Cross multiply
    7,420.18x = 11,135.71 × 5,976.76
  4. Step 4: Simplify right side
    7,420.18x = 66,555,445.73
  5. Step 5: Solve for x
    x = 66,555,445.73/7,420.18
  6. Step 6: Final answer
    x = 8,969.52

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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.