Home / 8,126.80-11,216.88-5,769.68

Finding the Fourth Proportional to 8,126.80, 11,216.88 and 5,769.68

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Solution

The fourth proportional to 8,126.80, 11,216.88 and 5,769.68 is: 7,963.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.80 : 11,216.88 = 5,769.68 : x
  2. Step 2: Convert to fraction form
    8,126.80/11,216.88 = 5,769.68/x
  3. Step 3: Cross multiply
    8,126.80x = 11,216.88 × 5,769.68
  4. Step 4: Simplify right side
    8,126.80x = 64,717,808.20
  5. Step 5: Solve for x
    x = 64,717,808.20/8,126.80
  6. Step 6: Final answer
    x = 7,963.50

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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.