Home / 8,280.19-12,408.21-3,839.21

Finding the Fourth Proportional to 8,280.19, 12,408.21 and 3,839.21

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Solution

The fourth proportional to 8,280.19, 12,408.21 and 3,839.21 is: 5,753.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.19 : 12,408.21 = 3,839.21 : x
  2. Step 2: Convert to fraction form
    8,280.19/12,408.21 = 3,839.21/x
  3. Step 3: Cross multiply
    8,280.19x = 12,408.21 × 3,839.21
  4. Step 4: Simplify right side
    8,280.19x = 47,637,778.20
  5. Step 5: Solve for x
    x = 47,637,778.20/8,280.19
  6. Step 6: Final answer
    x = 5,753.22

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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.