Home / 6,405.21-8,839.13-4,049.29

Finding the Fourth Proportional to 6,405.21, 8,839.13 and 4,049.29

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Solution

The fourth proportional to 6,405.21, 8,839.13 and 4,049.29 is: 5,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.21 : 8,839.13 = 4,049.29 : x
  2. Step 2: Convert to fraction form
    6,405.21/8,839.13 = 4,049.29/x
  3. Step 3: Cross multiply
    6,405.21x = 8,839.13 × 4,049.29
  4. Step 4: Simplify right side
    6,405.21x = 35,792,180.47
  5. Step 5: Solve for x
    x = 35,792,180.47/6,405.21
  6. Step 6: Final answer
    x = 5,587.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.