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Finding the Fourth Proportional to 2,886.47, 3,983.75 and 1,767.22

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Solution

The fourth proportional to 2,886.47, 3,983.75 and 1,767.22 is: 2,439.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.47 : 3,983.75 = 1,767.22 : x
  2. Step 2: Convert to fraction form
    2,886.47/3,983.75 = 1,767.22/x
  3. Step 3: Cross multiply
    2,886.47x = 3,983.75 × 1,767.22
  4. Step 4: Simplify right side
    2,886.47x = 7,040,162.68
  5. Step 5: Solve for x
    x = 7,040,162.68/2,886.47
  6. Step 6: Final answer
    x = 2,439.02

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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.