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Finding the Fourth Proportional to 12,641.71, 18,966.34 and 3,757.34

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Solution

The fourth proportional to 12,641.71, 18,966.34 and 3,757.34 is: 5,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.71 : 18,966.34 = 3,757.34 : x
  2. Step 2: Convert to fraction form
    12,641.71/18,966.34 = 3,757.34/x
  3. Step 3: Cross multiply
    12,641.71x = 18,966.34 × 3,757.34
  4. Step 4: Simplify right side
    12,641.71x = 71,262,933.36
  5. Step 5: Solve for x
    x = 71,262,933.36/12,641.71
  6. Step 6: Final answer
    x = 5,637.13

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1.5x scale

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.