Home / 6,991.48-9,639.30-5,727.88

Finding the Fourth Proportional to 6,991.48, 9,639.30 and 5,727.88

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Solution

The fourth proportional to 6,991.48, 9,639.30 and 5,727.88 is: 7,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.48 : 9,639.30 = 5,727.88 : x
  2. Step 2: Convert to fraction form
    6,991.48/9,639.30 = 5,727.88/x
  3. Step 3: Cross multiply
    6,991.48x = 9,639.30 × 5,727.88
  4. Step 4: Simplify right side
    6,991.48x = 55,212,753.68
  5. Step 5: Solve for x
    x = 55,212,753.68/6,991.48
  6. Step 6: Final answer
    x = 7,897.15

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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.