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Finding the Fourth Proportional to 2,918.66, 4,375.49 and 1,274.00

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Solution

The fourth proportional to 2,918.66, 4,375.49 and 1,274.00 is: 1,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.66 : 4,375.49 = 1,274.00 : x
  2. Step 2: Convert to fraction form
    2,918.66/4,375.49 = 1,274.00/x
  3. Step 3: Cross multiply
    2,918.66x = 4,375.49 × 1,274.00
  4. Step 4: Simplify right side
    2,918.66x = 5,574,346.01
  5. Step 5: Solve for x
    x = 5,574,346.01/2,918.66
  6. Step 6: Final answer
    x = 1,909.90

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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.