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Finding the Fourth Proportional to 2,707.72, 4,064.65 and 1,818.90

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Solution

The fourth proportional to 2,707.72, 4,064.65 and 1,818.90 is: 2,730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.72 : 4,064.65 = 1,818.90 : x
  2. Step 2: Convert to fraction form
    2,707.72/4,064.65 = 1,818.90/x
  3. Step 3: Cross multiply
    2,707.72x = 4,064.65 × 1,818.90
  4. Step 4: Simplify right side
    2,707.72x = 7,393,187.34
  5. Step 5: Solve for x
    x = 7,393,187.34/2,707.72
  6. Step 6: Final answer
    x = 2,730.41

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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.