Home / 2,617.26-3,931.36-2,207.20

Finding the Fourth Proportional to 2,617.26, 3,931.36 and 2,207.20

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Solution

The fourth proportional to 2,617.26, 3,931.36 and 2,207.20 is: 3,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.26 : 3,931.36 = 2,207.20 : x
  2. Step 2: Convert to fraction form
    2,617.26/3,931.36 = 2,207.20/x
  3. Step 3: Cross multiply
    2,617.26x = 3,931.36 × 2,207.20
  4. Step 4: Simplify right side
    2,617.26x = 8,677,297.79
  5. Step 5: Solve for x
    x = 8,677,297.79/2,617.26
  6. Step 6: Final answer
    x = 3,315.41

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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.