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Finding the Fourth Proportional to 6,808.70, 10,212.75 and 1,878.20

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Solution

The fourth proportional to 6,808.70, 10,212.75 and 1,878.20 is: 2,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,808.70 : 10,212.75 = 1,878.20 : x
  2. Step 2: Convert to fraction form
    6,808.70/10,212.75 = 1,878.20/x
  3. Step 3: Cross multiply
    6,808.70x = 10,212.75 × 1,878.20
  4. Step 4: Simplify right side
    6,808.70x = 19,181,535.99
  5. Step 5: Solve for x
    x = 19,181,535.99/6,808.70
  6. Step 6: Final answer
    x = 2,817.21

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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.