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Finding the Fourth Proportional to 2,891.52, 3,988.26 and 2,795.07

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Solution

The fourth proportional to 2,891.52, 3,988.26 and 2,795.07 is: 3,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.52 : 3,988.26 = 2,795.07 : x
  2. Step 2: Convert to fraction form
    2,891.52/3,988.26 = 2,795.07/x
  3. Step 3: Cross multiply
    2,891.52x = 3,988.26 × 2,795.07
  4. Step 4: Simplify right side
    2,891.52x = 11,147,465.88
  5. Step 5: Solve for x
    x = 11,147,465.88/2,891.52
  6. Step 6: Final answer
    x = 3,855.23

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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.