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Finding the Fourth Proportional to 5,277.57, 7,282.63 and 2,919.57

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Solution

The fourth proportional to 5,277.57, 7,282.63 and 2,919.57 is: 4,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.57 : 7,282.63 = 2,919.57 : x
  2. Step 2: Convert to fraction form
    5,277.57/7,282.63 = 2,919.57/x
  3. Step 3: Cross multiply
    5,277.57x = 7,282.63 × 2,919.57
  4. Step 4: Simplify right side
    5,277.57x = 21,262,148.07
  5. Step 5: Solve for x
    x = 21,262,148.07/5,277.57
  6. Step 6: Final answer
    x = 4,028.78

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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.