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Finding the Fourth Proportional to 8,678.58, 13,017.87 and 2,104.74

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Solution

The fourth proportional to 8,678.58, 13,017.87 and 2,104.74 is: 3,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.58 : 13,017.87 = 2,104.74 : x
  2. Step 2: Convert to fraction form
    8,678.58/13,017.87 = 2,104.74/x
  3. Step 3: Cross multiply
    8,678.58x = 13,017.87 × 2,104.74
  4. Step 4: Simplify right side
    8,678.58x = 27,399,231.70
  5. Step 5: Solve for x
    x = 27,399,231.70/8,678.58
  6. Step 6: Final answer
    x = 3,157.11

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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.