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Finding the Fourth Proportional to 6,650.91, 9,973.26 and 3,878.28

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Solution

The fourth proportional to 6,650.91, 9,973.26 and 3,878.28 is: 5,815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.91 : 9,973.26 = 3,878.28 : x
  2. Step 2: Convert to fraction form
    6,650.91/9,973.26 = 3,878.28/x
  3. Step 3: Cross multiply
    6,650.91x = 9,973.26 × 3,878.28
  4. Step 4: Simplify right side
    6,650.91x = 38,679,094.79
  5. Step 5: Solve for x
    x = 38,679,094.79/6,650.91
  6. Step 6: Final answer
    x = 5,815.61

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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.