Home / 2,213.16-3,316.86-913.92

Finding the Fourth Proportional to 2,213.16, 3,316.86 and 913.92

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Solution

The fourth proportional to 2,213.16, 3,316.86 and 913.92 is: 1,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.16 : 3,316.86 = 913.92 : x
  2. Step 2: Convert to fraction form
    2,213.16/3,316.86 = 913.92/x
  3. Step 3: Cross multiply
    2,213.16x = 3,316.86 × 913.92
  4. Step 4: Simplify right side
    2,213.16x = 3,031,344.69
  5. Step 5: Solve for x
    x = 3,031,344.69/2,213.16
  6. Step 6: Final answer
    x = 1,369.69

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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.