Home / 8,520.19-12,780.24-3,326.08

Finding the Fourth Proportional to 8,520.19, 12,780.24 and 3,326.08

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Solution

The fourth proportional to 8,520.19, 12,780.24 and 3,326.08 is: 4,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.19 : 12,780.24 = 3,326.08 : x
  2. Step 2: Convert to fraction form
    8,520.19/12,780.24 = 3,326.08/x
  3. Step 3: Cross multiply
    8,520.19x = 12,780.24 × 3,326.08
  4. Step 4: Simplify right side
    8,520.19x = 42,508,100.66
  5. Step 5: Solve for x
    x = 42,508,100.66/8,520.19
  6. Step 6: Final answer
    x = 4,989.10

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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.