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Finding the Fourth Proportional to 2,855.52, 4,278.96 and 2,639.52

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Solution

The fourth proportional to 2,855.52, 4,278.96 and 2,639.52 is: 3,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.52 : 4,278.96 = 2,639.52 : x
  2. Step 2: Convert to fraction form
    2,855.52/4,278.96 = 2,639.52/x
  3. Step 3: Cross multiply
    2,855.52x = 4,278.96 × 2,639.52
  4. Step 4: Simplify right side
    2,855.52x = 11,294,400.50
  5. Step 5: Solve for x
    x = 11,294,400.50/2,855.52
  6. Step 6: Final answer
    x = 3,955.29

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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.