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Finding the Fourth Proportional to 8,775.68, 12,120.49 and 6,396.26

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Solution

The fourth proportional to 8,775.68, 12,120.49 and 6,396.26 is: 8,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.68 : 12,120.49 = 6,396.26 : x
  2. Step 2: Convert to fraction form
    8,775.68/12,120.49 = 6,396.26/x
  3. Step 3: Cross multiply
    8,775.68x = 12,120.49 × 6,396.26
  4. Step 4: Simplify right side
    8,775.68x = 77,525,805.37
  5. Step 5: Solve for x
    x = 77,525,805.37/8,775.68
  6. Step 6: Final answer
    x = 8,834.17

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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.