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Finding the Fourth Proportional to 8,878.84, 13,305.56 and 6,520.34

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Solution

The fourth proportional to 8,878.84, 13,305.56 and 6,520.34 is: 9,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.84 : 13,305.56 = 6,520.34 : x
  2. Step 2: Convert to fraction form
    8,878.84/13,305.56 = 6,520.34/x
  3. Step 3: Cross multiply
    8,878.84x = 13,305.56 × 6,520.34
  4. Step 4: Simplify right side
    8,878.84x = 86,756,775.09
  5. Step 5: Solve for x
    x = 86,756,775.09/8,878.84
  6. Step 6: Final answer
    x = 9,771.19

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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.