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Finding the Fourth Proportional to 8,266.78, 12,397.64 and 2,718.99

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Solution

The fourth proportional to 8,266.78, 12,397.64 and 2,718.99 is: 4,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.78 : 12,397.64 = 2,718.99 : x
  2. Step 2: Convert to fraction form
    8,266.78/12,397.64 = 2,718.99/x
  3. Step 3: Cross multiply
    8,266.78x = 12,397.64 × 2,718.99
  4. Step 4: Simplify right side
    8,266.78x = 33,709,059.18
  5. Step 5: Solve for x
    x = 33,709,059.18/8,266.78
  6. Step 6: Final answer
    x = 4,077.65

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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.