Home / 8,431.21-12,648.30-3,498.31

Finding the Fourth Proportional to 8,431.21, 12,648.30 and 3,498.31

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Solution

The fourth proportional to 8,431.21, 12,648.30 and 3,498.31 is: 5,248.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.21 : 12,648.30 = 3,498.31 : x
  2. Step 2: Convert to fraction form
    8,431.21/12,648.30 = 3,498.31/x
  3. Step 3: Cross multiply
    8,431.21x = 12,648.30 × 3,498.31
  4. Step 4: Simplify right side
    8,431.21x = 44,247,674.37
  5. Step 5: Solve for x
    x = 44,247,674.37/8,431.21
  6. Step 6: Final answer
    x = 5,248.08

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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.