Home / 8,208.02-12,288.78-6,380.51

Finding the Fourth Proportional to 8,208.02, 12,288.78 and 6,380.51

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Solution

The fourth proportional to 8,208.02, 12,288.78 and 6,380.51 is: 9,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.02 : 12,288.78 = 6,380.51 : x
  2. Step 2: Convert to fraction form
    8,208.02/12,288.78 = 6,380.51/x
  3. Step 3: Cross multiply
    8,208.02x = 12,288.78 × 6,380.51
  4. Step 4: Simplify right side
    8,208.02x = 78,408,683.68
  5. Step 5: Solve for x
    x = 78,408,683.68/8,208.02
  6. Step 6: Final answer
    x = 9,552.69

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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.