Home / 5,280.22-7,921.19-1,993.60

Finding the Fourth Proportional to 5,280.22, 7,921.19 and 1,993.60

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Solution

The fourth proportional to 5,280.22, 7,921.19 and 1,993.60 is: 2,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.22 : 7,921.19 = 1,993.60 : x
  2. Step 2: Convert to fraction form
    5,280.22/7,921.19 = 1,993.60/x
  3. Step 3: Cross multiply
    5,280.22x = 7,921.19 × 1,993.60
  4. Step 4: Simplify right side
    5,280.22x = 15,791,684.38
  5. Step 5: Solve for x
    x = 15,791,684.38/5,280.22
  6. Step 6: Final answer
    x = 2,990.72

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1.5x scale

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.