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Finding the Fourth Proportional to 12,718.52, 19,079.08 and 3,484.52

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Solution

The fourth proportional to 12,718.52, 19,079.08 and 3,484.52 is: 5,227.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.52 : 19,079.08 = 3,484.52 : x
  2. Step 2: Convert to fraction form
    12,718.52/19,079.08 = 3,484.52/x
  3. Step 3: Cross multiply
    12,718.52x = 19,079.08 × 3,484.52
  4. Step 4: Simplify right side
    12,718.52x = 66,481,435.84
  5. Step 5: Solve for x
    x = 66,481,435.84/12,718.52
  6. Step 6: Final answer
    x = 5,227.14

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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.