Home / 4,431.30-6,646.92-2,115.78

Finding the Fourth Proportional to 4,431.30, 6,646.92 and 2,115.78

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Solution

The fourth proportional to 4,431.30, 6,646.92 and 2,115.78 is: 3,173.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,431.30 : 6,646.92 = 2,115.78 : x
  2. Step 2: Convert to fraction form
    4,431.30/6,646.92 = 2,115.78/x
  3. Step 3: Cross multiply
    4,431.30x = 6,646.92 × 2,115.78
  4. Step 4: Simplify right side
    4,431.30x = 14,063,420.40
  5. Step 5: Solve for x
    x = 14,063,420.40/4,431.30
  6. Step 6: Final answer
    x = 3,173.66

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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.