Home / 8,130.18-12,189.36-5,491.17

Finding the Fourth Proportional to 8,130.18, 12,189.36 and 5,491.17

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Solution

The fourth proportional to 8,130.18, 12,189.36 and 5,491.17 is: 8,232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.18 : 12,189.36 = 5,491.17 : x
  2. Step 2: Convert to fraction form
    8,130.18/12,189.36 = 5,491.17/x
  3. Step 3: Cross multiply
    8,130.18x = 12,189.36 × 5,491.17
  4. Step 4: Simplify right side
    8,130.18x = 66,933,847.95
  5. Step 5: Solve for x
    x = 66,933,847.95/8,130.18
  6. Step 6: Final answer
    x = 8,232.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.