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Finding the Fourth Proportional to 6,991.67, 9,646.91 and 5,104.28

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Solution

The fourth proportional to 6,991.67, 9,646.91 and 5,104.28 is: 7,042.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.67 : 9,646.91 = 5,104.28 : x
  2. Step 2: Convert to fraction form
    6,991.67/9,646.91 = 5,104.28/x
  3. Step 3: Cross multiply
    6,991.67x = 9,646.91 × 5,104.28
  4. Step 4: Simplify right side
    6,991.67x = 49,240,529.77
  5. Step 5: Solve for x
    x = 49,240,529.77/6,991.67
  6. Step 6: Final answer
    x = 7,042.74

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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.