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Finding the Fourth Proportional to 2,891.88, 4,337.40 and 943.80

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Solution

The fourth proportional to 2,891.88, 4,337.40 and 943.80 is: 1,415.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.88 : 4,337.40 = 943.80 : x
  2. Step 2: Convert to fraction form
    2,891.88/4,337.40 = 943.80/x
  3. Step 3: Cross multiply
    2,891.88x = 4,337.40 × 943.80
  4. Step 4: Simplify right side
    2,891.88x = 4,093,638.12
  5. Step 5: Solve for x
    x = 4,093,638.12/2,891.88
  6. Step 6: Final answer
    x = 1,415.56

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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.