Home / 8,126.12-12,186.68-4,228.40

Finding the Fourth Proportional to 8,126.12, 12,186.68 and 4,228.40

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Solution

The fourth proportional to 8,126.12, 12,186.68 and 4,228.40 is: 6,341.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.12 : 12,186.68 = 4,228.40 : x
  2. Step 2: Convert to fraction form
    8,126.12/12,186.68 = 4,228.40/x
  3. Step 3: Cross multiply
    8,126.12x = 12,186.68 × 4,228.40
  4. Step 4: Simplify right side
    8,126.12x = 51,530,157.71
  5. Step 5: Solve for x
    x = 51,530,157.71/8,126.12
  6. Step 6: Final answer
    x = 6,341.30

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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.