Home / 8,190.81-11,291.87-6,926.79

Finding the Fourth Proportional to 8,190.81, 11,291.87 and 6,926.79

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Solution

The fourth proportional to 8,190.81, 11,291.87 and 6,926.79 is: 9,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.81 : 11,291.87 = 6,926.79 : x
  2. Step 2: Convert to fraction form
    8,190.81/11,291.87 = 6,926.79/x
  3. Step 3: Cross multiply
    8,190.81x = 11,291.87 × 6,926.79
  4. Step 4: Simplify right side
    8,190.81x = 78,216,412.20
  5. Step 5: Solve for x
    x = 78,216,412.20/8,190.81
  6. Step 6: Final answer
    x = 9,549.29

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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.