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Finding the Fourth Proportional to 6,991.92, 9,649.32 and 3,848.10

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Solution

The fourth proportional to 6,991.92, 9,649.32 and 3,848.10 is: 5,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.92 : 9,649.32 = 3,848.10 : x
  2. Step 2: Convert to fraction form
    6,991.92/9,649.32 = 3,848.10/x
  3. Step 3: Cross multiply
    6,991.92x = 9,649.32 × 3,848.10
  4. Step 4: Simplify right side
    6,991.92x = 37,131,548.29
  5. Step 5: Solve for x
    x = 37,131,548.29/6,991.92
  6. Step 6: Final answer
    x = 5,310.64

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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.