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Finding the Fourth Proportional to 8,878.58, 13,305.18 and 6,520.08

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Solution

The fourth proportional to 8,878.58, 13,305.18 and 6,520.08 is: 9,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.58 : 13,305.18 = 6,520.08 : x
  2. Step 2: Convert to fraction form
    8,878.58/13,305.18 = 6,520.08/x
  3. Step 3: Cross multiply
    8,878.58x = 13,305.18 × 6,520.08
  4. Step 4: Simplify right side
    8,878.58x = 86,750,838.01
  5. Step 5: Solve for x
    x = 86,750,838.01/8,878.58
  6. Step 6: Final answer
    x = 9,770.80

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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.