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Finding the Fourth Proportional to 2,762.64, 4,143.96 and 1,118.07

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Solution

The fourth proportional to 2,762.64, 4,143.96 and 1,118.07 is: 1,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.64 : 4,143.96 = 1,118.07 : x
  2. Step 2: Convert to fraction form
    2,762.64/4,143.96 = 1,118.07/x
  3. Step 3: Cross multiply
    2,762.64x = 4,143.96 × 1,118.07
  4. Step 4: Simplify right side
    2,762.64x = 4,633,237.36
  5. Step 5: Solve for x
    x = 4,633,237.36/2,762.64
  6. Step 6: Final answer
    x = 1,677.11

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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.