Home / 5,639.27-8,449.57-3,987.63

Finding the Fourth Proportional to 5,639.27, 8,449.57 and 3,987.63

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Solution

The fourth proportional to 5,639.27, 8,449.57 and 3,987.63 is: 5,974.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.27 : 8,449.57 = 3,987.63 : x
  2. Step 2: Convert to fraction form
    5,639.27/8,449.57 = 3,987.63/x
  3. Step 3: Cross multiply
    5,639.27x = 8,449.57 × 3,987.63
  4. Step 4: Simplify right side
    5,639.27x = 33,693,741.37
  5. Step 5: Solve for x
    x = 33,693,741.37/5,639.27
  6. Step 6: Final answer
    x = 5,974.84

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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.