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Finding the Fourth Proportional to 6,221.91, 8,587.80 and 4,333.80

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Solution

The fourth proportional to 6,221.91, 8,587.80 and 4,333.80 is: 5,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.91 : 8,587.80 = 4,333.80 : x
  2. Step 2: Convert to fraction form
    6,221.91/8,587.80 = 4,333.80/x
  3. Step 3: Cross multiply
    6,221.91x = 8,587.80 × 4,333.80
  4. Step 4: Simplify right side
    6,221.91x = 37,217,807.64
  5. Step 5: Solve for x
    x = 37,217,807.64/6,221.91
  6. Step 6: Final answer
    x = 5,981.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.