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Finding the Fourth Proportional to 10,451.84, 15,678 and 2,660.66

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Solution

The fourth proportional to 10,451.84, 15,678 and 2,660.66 is: 3,991.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,451.84 : 15,678 = 2,660.66 : x
  2. Step 2: Convert to fraction form
    10,451.84/15,678 = 2,660.66/x
  3. Step 3: Cross multiply
    10,451.84x = 15,678 × 2,660.66
  4. Step 4: Simplify right side
    10,451.84x = 41,713,827.48
  5. Step 5: Solve for x
    x = 41,713,827.48/10,451.84
  6. Step 6: Final answer
    x = 3,991.05

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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.