Home / 8,431.98-12,647.20-3,752.21

Finding the Fourth Proportional to 8,431.98, 12,647.20 and 3,752.21

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Solution

The fourth proportional to 8,431.98, 12,647.20 and 3,752.21 is: 5,627.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.98 : 12,647.20 = 3,752.21 : x
  2. Step 2: Convert to fraction form
    8,431.98/12,647.20 = 3,752.21/x
  3. Step 3: Cross multiply
    8,431.98x = 12,647.20 × 3,752.21
  4. Step 4: Simplify right side
    8,431.98x = 47,454,950.31
  5. Step 5: Solve for x
    x = 47,454,950.31/8,431.98
  6. Step 6: Final answer
    x = 5,627.97

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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.