Home / 5,921.28-8,171.28-3,268.80

Finding the Fourth Proportional to 5,921.28, 8,171.28 and 3,268.80

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Solution

The fourth proportional to 5,921.28, 8,171.28 and 3,268.80 is: 4,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.28 : 8,171.28 = 3,268.80 : x
  2. Step 2: Convert to fraction form
    5,921.28/8,171.28 = 3,268.80/x
  3. Step 3: Cross multiply
    5,921.28x = 8,171.28 × 3,268.80
  4. Step 4: Simplify right side
    5,921.28x = 26,710,280.06
  5. Step 5: Solve for x
    x = 26,710,280.06/5,921.28
  6. Step 6: Final answer
    x = 4,510.90

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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.