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Finding the Fourth Proportional to 3,376.13, 5,064.17 and 911.19

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Solution

The fourth proportional to 3,376.13, 5,064.17 and 911.19 is: 1,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,376.13 : 5,064.17 = 911.19 : x
  2. Step 2: Convert to fraction form
    3,376.13/5,064.17 = 911.19/x
  3. Step 3: Cross multiply
    3,376.13x = 5,064.17 × 911.19
  4. Step 4: Simplify right side
    3,376.13x = 4,614,435.50
  5. Step 5: Solve for x
    x = 4,614,435.50/3,376.13
  6. Step 6: Final answer
    x = 1,366.78

Related Problems

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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.