Home / 8,099.75-12,155.57-3,720.21

Finding the Fourth Proportional to 8,099.75, 12,155.57 and 3,720.21

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Solution

The fourth proportional to 8,099.75, 12,155.57 and 3,720.21 is: 5,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,099.75 : 12,155.57 = 3,720.21 : x
  2. Step 2: Convert to fraction form
    8,099.75/12,155.57 = 3,720.21/x
  3. Step 3: Cross multiply
    8,099.75x = 12,155.57 × 3,720.21
  4. Step 4: Simplify right side
    8,099.75x = 45,221,254.47
  5. Step 5: Solve for x
    x = 45,221,254.47/8,099.75
  6. Step 6: Final answer
    x = 5,583.05

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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.