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Finding the Fourth Proportional to 6,407.98, 8,843.62 and 3,889.51

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Solution

The fourth proportional to 6,407.98, 8,843.62 and 3,889.51 is: 5,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.98 : 8,843.62 = 3,889.51 : x
  2. Step 2: Convert to fraction form
    6,407.98/8,843.62 = 3,889.51/x
  3. Step 3: Cross multiply
    6,407.98x = 8,843.62 × 3,889.51
  4. Step 4: Simplify right side
    6,407.98x = 34,397,364.34
  5. Step 5: Solve for x
    x = 34,397,364.34/6,407.98
  6. Step 6: Final answer
    x = 5,367.90

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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.