Home / 8,189.12-11,316.27-6,977.15

Finding the Fourth Proportional to 8,189.12, 11,316.27 and 6,977.15

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Solution

The fourth proportional to 8,189.12, 11,316.27 and 6,977.15 is: 9,641.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.12 : 11,316.27 = 6,977.15 : x
  2. Step 2: Convert to fraction form
    8,189.12/11,316.27 = 6,977.15/x
  3. Step 3: Cross multiply
    8,189.12x = 11,316.27 × 6,977.15
  4. Step 4: Simplify right side
    8,189.12x = 78,955,313.23
  5. Step 5: Solve for x
    x = 78,955,313.23/8,189.12
  6. Step 6: Final answer
    x = 9,641.49

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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.