Home / 8,433.08-12,645.58-3,987.05

Finding the Fourth Proportional to 8,433.08, 12,645.58 and 3,987.05

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Solution

The fourth proportional to 8,433.08, 12,645.58 and 3,987.05 is: 5,978.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,433.08 : 12,645.58 = 3,987.05 : x
  2. Step 2: Convert to fraction form
    8,433.08/12,645.58 = 3,987.05/x
  3. Step 3: Cross multiply
    8,433.08x = 12,645.58 × 3,987.05
  4. Step 4: Simplify right side
    8,433.08x = 50,418,486.54
  5. Step 5: Solve for x
    x = 50,418,486.54/8,433.08
  6. Step 6: Final answer
    x = 5,978.65

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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.