Home / 8,431.80-12,648.24-2,885.64

Finding the Fourth Proportional to 8,431.80, 12,648.24 and 2,885.64

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Solution

The fourth proportional to 8,431.80, 12,648.24 and 2,885.64 is: 4,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.80 : 12,648.24 = 2,885.64 : x
  2. Step 2: Convert to fraction form
    8,431.80/12,648.24 = 2,885.64/x
  3. Step 3: Cross multiply
    8,431.80x = 12,648.24 × 2,885.64
  4. Step 4: Simplify right side
    8,431.80x = 36,498,267.27
  5. Step 5: Solve for x
    x = 36,498,267.27/8,431.80
  6. Step 6: Final answer
    x = 4,328.64

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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.