Home / 2,213.16-3,317.76-913.80

Finding the Fourth Proportional to 2,213.16, 3,317.76 and 913.80

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Solution

The fourth proportional to 2,213.16, 3,317.76 and 913.80 is: 1,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.16 : 3,317.76 = 913.80 : x
  2. Step 2: Convert to fraction form
    2,213.16/3,317.76 = 913.80/x
  3. Step 3: Cross multiply
    2,213.16x = 3,317.76 × 913.80
  4. Step 4: Simplify right side
    2,213.16x = 3,031,769.09
  5. Step 5: Solve for x
    x = 3,031,769.09/2,213.16
  6. Step 6: Final answer
    x = 1,369.88

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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.