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Finding the Fourth Proportional to 5,571.90, 8,354.88 and 1,872.90

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Solution

The fourth proportional to 5,571.90, 8,354.88 and 1,872.90 is: 2,808.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.90 : 8,354.88 = 1,872.90 : x
  2. Step 2: Convert to fraction form
    5,571.90/8,354.88 = 1,872.90/x
  3. Step 3: Cross multiply
    5,571.90x = 8,354.88 × 1,872.90
  4. Step 4: Simplify right side
    5,571.90x = 15,647,854.75
  5. Step 5: Solve for x
    x = 15,647,854.75/5,571.90
  6. Step 6: Final answer
    x = 2,808.35

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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.