Home / 8,101.27-11,157.40-6,981.80

Finding the Fourth Proportional to 8,101.27, 11,157.40 and 6,981.80

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Solution

The fourth proportional to 8,101.27, 11,157.40 and 6,981.80 is: 9,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,101.27 : 11,157.40 = 6,981.80 : x
  2. Step 2: Convert to fraction form
    8,101.27/11,157.40 = 6,981.80/x
  3. Step 3: Cross multiply
    8,101.27x = 11,157.40 × 6,981.80
  4. Step 4: Simplify right side
    8,101.27x = 77,898,735.32
  5. Step 5: Solve for x
    x = 77,898,735.32/8,101.27
  6. Step 6: Final answer
    x = 9,615.62

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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.