Home / 10,612.75-15,919.13-3,316.75

Finding the Fourth Proportional to 10,612.75, 15,919.13 and 3,316.75

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Solution

The fourth proportional to 10,612.75, 15,919.13 and 3,316.75 is: 4,975.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.75 : 15,919.13 = 3,316.75 : x
  2. Step 2: Convert to fraction form
    10,612.75/15,919.13 = 3,316.75/x
  3. Step 3: Cross multiply
    10,612.75x = 15,919.13 × 3,316.75
  4. Step 4: Simplify right side
    10,612.75x = 52,799,757.84
  5. Step 5: Solve for x
    x = 52,799,757.84/10,612.75
  6. Step 6: Final answer
    x = 4,975.13

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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.