Home / 5,277.20-7,282.60-2,919.28

Finding the Fourth Proportional to 5,277.20, 7,282.60 and 2,919.28

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Solution

The fourth proportional to 5,277.20, 7,282.60 and 2,919.28 is: 4,028.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.20 : 7,282.60 = 2,919.28 : x
  2. Step 2: Convert to fraction form
    5,277.20/7,282.60 = 2,919.28/x
  3. Step 3: Cross multiply
    5,277.20x = 7,282.60 × 2,919.28
  4. Step 4: Simplify right side
    5,277.20x = 21,259,948.53
  5. Step 5: Solve for x
    x = 21,259,948.53/5,277.20
  6. Step 6: Final answer
    x = 4,028.64

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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.