Home / 5,280.12-7,286.40-2,922.36

Finding the Fourth Proportional to 5,280.12, 7,286.40 and 2,922.36

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Solution

The fourth proportional to 5,280.12, 7,286.40 and 2,922.36 is: 4,032.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.12 : 7,286.40 = 2,922.36 : x
  2. Step 2: Convert to fraction form
    5,280.12/7,286.40 = 2,922.36/x
  3. Step 3: Cross multiply
    5,280.12x = 7,286.40 × 2,922.36
  4. Step 4: Simplify right side
    5,280.12x = 21,293,483.90
  5. Step 5: Solve for x
    x = 21,293,483.90/5,280.12
  6. Step 6: Final answer
    x = 4,032.77

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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.