Home / 3,810.16-5,715.25-1,213.10

Finding the Fourth Proportional to 3,810.16, 5,715.25 and 1,213.10

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Solution

The fourth proportional to 3,810.16, 5,715.25 and 1,213.10 is: 1,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.16 : 5,715.25 = 1,213.10 : x
  2. Step 2: Convert to fraction form
    3,810.16/5,715.25 = 1,213.10/x
  3. Step 3: Cross multiply
    3,810.16x = 5,715.25 × 1,213.10
  4. Step 4: Simplify right side
    3,810.16x = 6,933,173.97
  5. Step 5: Solve for x
    x = 6,933,173.97/3,810.16
  6. Step 6: Final answer
    x = 1,819.65

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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.