Home / 3,926.67-5,419.08-2,158.29

Finding the Fourth Proportional to 3,926.67, 5,419.08 and 2,158.29

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Solution

The fourth proportional to 3,926.67, 5,419.08 and 2,158.29 is: 2,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.67 : 5,419.08 = 2,158.29 : x
  2. Step 2: Convert to fraction form
    3,926.67/5,419.08 = 2,158.29/x
  3. Step 3: Cross multiply
    3,926.67x = 5,419.08 × 2,158.29
  4. Step 4: Simplify right side
    3,926.67x = 11,695,946.17
  5. Step 5: Solve for x
    x = 11,695,946.17/3,926.67
  6. Step 6: Final answer
    x = 2,978.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.