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Finding the Fourth Proportional to 2,143.23, 3,214.91 and 737.63

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Solution

The fourth proportional to 2,143.23, 3,214.91 and 737.63 is: 1,106.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.23 : 3,214.91 = 737.63 : x
  2. Step 2: Convert to fraction form
    2,143.23/3,214.91 = 737.63/x
  3. Step 3: Cross multiply
    2,143.23x = 3,214.91 × 737.63
  4. Step 4: Simplify right side
    2,143.23x = 2,371,407.74
  5. Step 5: Solve for x
    x = 2,371,407.74/2,143.23
  6. Step 6: Final answer
    x = 1,106.47

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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.