Home / 8,557.91-12,838.67-3,221.12

Finding the Fourth Proportional to 8,557.91, 12,838.67 and 3,221.12

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Solution

The fourth proportional to 8,557.91, 12,838.67 and 3,221.12 is: 4,832.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.91 : 12,838.67 = 3,221.12 : x
  2. Step 2: Convert to fraction form
    8,557.91/12,838.67 = 3,221.12/x
  3. Step 3: Cross multiply
    8,557.91x = 12,838.67 × 3,221.12
  4. Step 4: Simplify right side
    8,557.91x = 41,354,816.41
  5. Step 5: Solve for x
    x = 41,354,816.41/8,557.91
  6. Step 6: Final answer
    x = 4,832.35

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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.