Home / 5,280.77-7,917.57-2,159.87

Finding the Fourth Proportional to 5,280.77, 7,917.57 and 2,159.87

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Solution

The fourth proportional to 5,280.77, 7,917.57 and 2,159.87 is: 3,238.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.77 : 7,917.57 = 2,159.87 : x
  2. Step 2: Convert to fraction form
    5,280.77/7,917.57 = 2,159.87/x
  3. Step 3: Cross multiply
    5,280.77x = 7,917.57 × 2,159.87
  4. Step 4: Simplify right side
    5,280.77x = 17,100,882.33
  5. Step 5: Solve for x
    x = 17,100,882.33/5,280.77
  6. Step 6: Final answer
    x = 3,238.33

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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.