Home / 5,275.83-7,911.36-1,986.59

Finding the Fourth Proportional to 5,275.83, 7,911.36 and 1,986.59

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Solution

The fourth proportional to 5,275.83, 7,911.36 and 1,986.59 is: 2,978.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.83 : 7,911.36 = 1,986.59 : x
  2. Step 2: Convert to fraction form
    5,275.83/7,911.36 = 1,986.59/x
  3. Step 3: Cross multiply
    5,275.83x = 7,911.36 × 1,986.59
  4. Step 4: Simplify right side
    5,275.83x = 15,716,628.66
  5. Step 5: Solve for x
    x = 15,716,628.66/5,275.83
  6. Step 6: Final answer
    x = 2,978.99

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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.