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Finding the Fourth Proportional to 2,911.36, 4,359.92 and 1,868.08

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Solution

The fourth proportional to 2,911.36, 4,359.92 and 1,868.08 is: 2,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.36 : 4,359.92 = 1,868.08 : x
  2. Step 2: Convert to fraction form
    2,911.36/4,359.92 = 1,868.08/x
  3. Step 3: Cross multiply
    2,911.36x = 4,359.92 × 1,868.08
  4. Step 4: Simplify right side
    2,911.36x = 8,144,679.35
  5. Step 5: Solve for x
    x = 8,144,679.35/2,911.36
  6. Step 6: Final answer
    x = 2,797.55

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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.