Home / 5,775.28-7,969.88-3,122.68

Finding the Fourth Proportional to 5,775.28, 7,969.88 and 3,122.68

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Solution

The fourth proportional to 5,775.28, 7,969.88 and 3,122.68 is: 4,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,775.28 : 7,969.88 = 3,122.68 : x
  2. Step 2: Convert to fraction form
    5,775.28/7,969.88 = 3,122.68/x
  3. Step 3: Cross multiply
    5,775.28x = 7,969.88 × 3,122.68
  4. Step 4: Simplify right side
    5,775.28x = 24,887,384.88
  5. Step 5: Solve for x
    x = 24,887,384.88/5,775.28
  6. Step 6: Final answer
    x = 4,309.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.