Home / 8,138.10-12,191.38-4,617.46

Finding the Fourth Proportional to 8,138.10, 12,191.38 and 4,617.46

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Solution

The fourth proportional to 8,138.10, 12,191.38 and 4,617.46 is: 6,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.10 : 12,191.38 = 4,617.46 : x
  2. Step 2: Convert to fraction form
    8,138.10/12,191.38 = 4,617.46/x
  3. Step 3: Cross multiply
    8,138.10x = 12,191.38 × 4,617.46
  4. Step 4: Simplify right side
    8,138.10x = 56,293,213.19
  5. Step 5: Solve for x
    x = 56,293,213.19/8,138.10
  6. Step 6: Final answer
    x = 6,917.24

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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.