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Finding the Fourth Proportional to 3,336.91, 5,005.38 and 871.73

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Solution

The fourth proportional to 3,336.91, 5,005.38 and 871.73 is: 1,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.91 : 5,005.38 = 871.73 : x
  2. Step 2: Convert to fraction form
    3,336.91/5,005.38 = 871.73/x
  3. Step 3: Cross multiply
    3,336.91x = 5,005.38 × 871.73
  4. Step 4: Simplify right side
    3,336.91x = 4,363,332.02
  5. Step 5: Solve for x
    x = 4,363,332.02/3,336.91
  6. Step 6: Final answer
    x = 1,307.60

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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.