Home / 5,280.12-7,286.48-2,922.20

Finding the Fourth Proportional to 5,280.12, 7,286.48 and 2,922.20

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Solution

The fourth proportional to 5,280.12, 7,286.48 and 2,922.20 is: 4,032.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.12 : 7,286.48 = 2,922.20 : x
  2. Step 2: Convert to fraction form
    5,280.12/7,286.48 = 2,922.20/x
  3. Step 3: Cross multiply
    5,280.12x = 7,286.48 × 2,922.20
  4. Step 4: Simplify right side
    5,280.12x = 21,292,551.86
  5. Step 5: Solve for x
    x = 21,292,551.86/5,280.12
  6. Step 6: Final answer
    x = 4,032.59

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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.