Home / 6,991.11-9,647.68-3,966.81

Finding the Fourth Proportional to 6,991.11, 9,647.68 and 3,966.81

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Solution

The fourth proportional to 6,991.11, 9,647.68 and 3,966.81 is: 5,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.11 : 9,647.68 = 3,966.81 : x
  2. Step 2: Convert to fraction form
    6,991.11/9,647.68 = 3,966.81/x
  3. Step 3: Cross multiply
    6,991.11x = 9,647.68 × 3,966.81
  4. Step 4: Simplify right side
    6,991.11x = 38,270,503.58
  5. Step 5: Solve for x
    x = 38,270,503.58/6,991.11
  6. Step 6: Final answer
    x = 5,474.17

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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.