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Finding the Fourth Proportional to 2,636.84, 3,955.67 and 881.30

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Solution

The fourth proportional to 2,636.84, 3,955.67 and 881.30 is: 1,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.84 : 3,955.67 = 881.30 : x
  2. Step 2: Convert to fraction form
    2,636.84/3,955.67 = 881.30/x
  3. Step 3: Cross multiply
    2,636.84x = 3,955.67 × 881.30
  4. Step 4: Simplify right side
    2,636.84x = 3,486,131.97
  5. Step 5: Solve for x
    x = 3,486,131.97/2,636.84
  6. Step 6: Final answer
    x = 1,322.09

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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.