Home / 7,387.75-11,081.63-1,915.75

Finding the Fourth Proportional to 7,387.75, 11,081.63 and 1,915.75

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Solution

The fourth proportional to 7,387.75, 11,081.63 and 1,915.75 is: 2,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.75 : 11,081.63 = 1,915.75 : x
  2. Step 2: Convert to fraction form
    7,387.75/11,081.63 = 1,915.75/x
  3. Step 3: Cross multiply
    7,387.75x = 11,081.63 × 1,915.75
  4. Step 4: Simplify right side
    7,387.75x = 21,229,632.67
  5. Step 5: Solve for x
    x = 21,229,632.67/7,387.75
  6. Step 6: Final answer
    x = 2,873.63

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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.