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Finding the Fourth Proportional to 1,818.46, 2,509.66 and 1,072.66

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Solution

The fourth proportional to 1,818.46, 2,509.66 and 1,072.66 is: 1,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.46 : 2,509.66 = 1,072.66 : x
  2. Step 2: Convert to fraction form
    1,818.46/2,509.66 = 1,072.66/x
  3. Step 3: Cross multiply
    1,818.46x = 2,509.66 × 1,072.66
  4. Step 4: Simplify right side
    1,818.46x = 2,692,002.94
  5. Step 5: Solve for x
    x = 2,692,002.94/1,818.46
  6. Step 6: Final answer
    x = 1,480.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.