Home / 8,208.83-12,315.06-3,280.79

Finding the Fourth Proportional to 8,208.83, 12,315.06 and 3,280.79

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Solution

The fourth proportional to 8,208.83, 12,315.06 and 3,280.79 is: 4,921.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.83 : 12,315.06 = 3,280.79 : x
  2. Step 2: Convert to fraction form
    8,208.83/12,315.06 = 3,280.79/x
  3. Step 3: Cross multiply
    8,208.83x = 12,315.06 × 3,280.79
  4. Step 4: Simplify right side
    8,208.83x = 40,403,064.12
  5. Step 5: Solve for x
    x = 40,403,064.12/8,208.83
  6. Step 6: Final answer
    x = 4,921.91

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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.