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Finding the Fourth Proportional to 1,818.75, 2,509.77 and 1,072.67

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Solution

The fourth proportional to 1,818.75, 2,509.77 and 1,072.67 is: 1,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.75 : 2,509.77 = 1,072.67 : x
  2. Step 2: Convert to fraction form
    1,818.75/2,509.77 = 1,072.67/x
  3. Step 3: Cross multiply
    1,818.75x = 2,509.77 × 1,072.67
  4. Step 4: Simplify right side
    1,818.75x = 2,692,142.44
  5. Step 5: Solve for x
    x = 2,692,142.44/1,818.75
  6. Step 6: Final answer
    x = 1,480.22

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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.