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Finding the Fourth Proportional to 8,018.12, 12,016.20 and 4,509.84

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Solution

The fourth proportional to 8,018.12, 12,016.20 and 4,509.84 is: 6,758.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.12 : 12,016.20 = 4,509.84 : x
  2. Step 2: Convert to fraction form
    8,018.12/12,016.20 = 4,509.84/x
  3. Step 3: Cross multiply
    8,018.12x = 12,016.20 × 4,509.84
  4. Step 4: Simplify right side
    8,018.12x = 54,191,139.41
  5. Step 5: Solve for x
    x = 54,191,139.41/8,018.12
  6. Step 6: Final answer
    x = 6,758.58

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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.