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Finding the Fourth Proportional to 2,712.71, 4,069.56 and 958.22

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Solution

The fourth proportional to 2,712.71, 4,069.56 and 958.22 is: 1,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.71 : 4,069.56 = 958.22 : x
  2. Step 2: Convert to fraction form
    2,712.71/4,069.56 = 958.22/x
  3. Step 3: Cross multiply
    2,712.71x = 4,069.56 × 958.22
  4. Step 4: Simplify right side
    2,712.71x = 3,899,513.44
  5. Step 5: Solve for x
    x = 3,899,513.44/2,712.71
  6. Step 6: Final answer
    x = 1,437.50

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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.