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Finding the Fourth Proportional to 6,919.90, 10,383.90 and 2,537.80

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Solution

The fourth proportional to 6,919.90, 10,383.90 and 2,537.80 is: 3,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.90 : 10,383.90 = 2,537.80 : x
  2. Step 2: Convert to fraction form
    6,919.90/10,383.90 = 2,537.80/x
  3. Step 3: Cross multiply
    6,919.90x = 10,383.90 × 2,537.80
  4. Step 4: Simplify right side
    6,919.90x = 26,352,261.42
  5. Step 5: Solve for x
    x = 26,352,261.42/6,919.90
  6. Step 6: Final answer
    x = 3,808.19

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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.