Home / 6,386.78-9,573.08-2,687.91

Finding the Fourth Proportional to 6,386.78, 9,573.08 and 2,687.91

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Solution

The fourth proportional to 6,386.78, 9,573.08 and 2,687.91 is: 4,028.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.78 : 9,573.08 = 2,687.91 : x
  2. Step 2: Convert to fraction form
    6,386.78/9,573.08 = 2,687.91/x
  3. Step 3: Cross multiply
    6,386.78x = 9,573.08 × 2,687.91
  4. Step 4: Simplify right side
    6,386.78x = 25,731,564.02
  5. Step 5: Solve for x
    x = 25,731,564.02/6,386.78
  6. Step 6: Final answer
    x = 4,028.88

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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.