Home / 5,275.26-7,910.64-1,986.06

Finding the Fourth Proportional to 5,275.26, 7,910.64 and 1,986.06

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Solution

The fourth proportional to 5,275.26, 7,910.64 and 1,986.06 is: 2,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.26 : 7,910.64 = 1,986.06 : x
  2. Step 2: Convert to fraction form
    5,275.26/7,910.64 = 1,986.06/x
  3. Step 3: Cross multiply
    5,275.26x = 7,910.64 × 1,986.06
  4. Step 4: Simplify right side
    5,275.26x = 15,711,005.68
  5. Step 5: Solve for x
    x = 15,711,005.68/5,275.26
  6. Step 6: Final answer
    x = 2,978.24

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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.