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Finding the Fourth Proportional to 2,617.42, 3,926.13 and 886

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Solution

The fourth proportional to 2,617.42, 3,926.13 and 886 is: 1,329

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.42 : 3,926.13 = 886 : x
  2. Step 2: Convert to fraction form
    2,617.42/3,926.13 = 886/x
  3. Step 3: Cross multiply
    2,617.42x = 3,926.13 × 886
  4. Step 4: Simplify right side
    2,617.42x = 3,478,551.18
  5. Step 5: Solve for x
    x = 3,478,551.18/2,617.42
  6. Step 6: Final answer
    x = 1,329

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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.