Home / 6,386.40-9,579.60-2,691.29

Finding the Fourth Proportional to 6,386.40, 9,579.60 and 2,691.29

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Solution

The fourth proportional to 6,386.40, 9,579.60 and 2,691.29 is: 4,036.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.40 : 9,579.60 = 2,691.29 : x
  2. Step 2: Convert to fraction form
    6,386.40/9,579.60 = 2,691.29/x
  3. Step 3: Cross multiply
    6,386.40x = 9,579.60 × 2,691.29
  4. Step 4: Simplify right side
    6,386.40x = 25,781,505.63
  5. Step 5: Solve for x
    x = 25,781,505.63/6,386.40
  6. Step 6: Final answer
    x = 4,036.94

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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.