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Finding the Fourth Proportional to 8,813.95, 12,136.65 and 7,616.74

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Solution

The fourth proportional to 8,813.95, 12,136.65 and 7,616.74 is: 10,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.95 : 12,136.65 = 7,616.74 : x
  2. Step 2: Convert to fraction form
    8,813.95/12,136.65 = 7,616.74/x
  3. Step 3: Cross multiply
    8,813.95x = 12,136.65 × 7,616.74
  4. Step 4: Simplify right side
    8,813.95x = 92,441,738.82
  5. Step 5: Solve for x
    x = 92,441,738.82/8,813.95
  6. Step 6: Final answer
    x = 10,488.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.