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Finding the Fourth Proportional to 7,449, 11,173.50 and 1,902.15

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Solution

The fourth proportional to 7,449, 11,173.50 and 1,902.15 is: 2,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,449 : 11,173.50 = 1,902.15 : x
  2. Step 2: Convert to fraction form
    7,449/11,173.50 = 1,902.15/x
  3. Step 3: Cross multiply
    7,449x = 11,173.50 × 1,902.15
  4. Step 4: Simplify right side
    7,449x = 21,253,607.65
  5. Step 5: Solve for x
    x = 21,253,607.65/7,449
  6. Step 6: Final answer
    x = 2,853.22

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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.