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Finding the Fourth Proportional to 1,672.73, 2,511.54 and 1,643.19

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Solution

The fourth proportional to 1,672.73, 2,511.54 and 1,643.19 is: 2,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.73 : 2,511.54 = 1,643.19 : x
  2. Step 2: Convert to fraction form
    1,672.73/2,511.54 = 1,643.19/x
  3. Step 3: Cross multiply
    1,672.73x = 2,511.54 × 1,643.19
  4. Step 4: Simplify right side
    1,672.73x = 4,126,953.81
  5. Step 5: Solve for x
    x = 4,126,953.81/1,672.73
  6. Step 6: Final answer
    x = 2,467.20

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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.