Home / 5,386.51-8,080.17-2,789.92

Finding the Fourth Proportional to 5,386.51, 8,080.17 and 2,789.92

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Solution

The fourth proportional to 5,386.51, 8,080.17 and 2,789.92 is: 4,185.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.51 : 8,080.17 = 2,789.92 : x
  2. Step 2: Convert to fraction form
    5,386.51/8,080.17 = 2,789.92/x
  3. Step 3: Cross multiply
    5,386.51x = 8,080.17 × 2,789.92
  4. Step 4: Simplify right side
    5,386.51x = 22,543,027.89
  5. Step 5: Solve for x
    x = 22,543,027.89/5,386.51
  6. Step 6: Final answer
    x = 4,185.09

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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.