Home / 8,143.53-12,212.86-4,245.81

Finding the Fourth Proportional to 8,143.53, 12,212.86 and 4,245.81

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Solution

The fourth proportional to 8,143.53, 12,212.86 and 4,245.81 is: 6,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.53 : 12,212.86 = 4,245.81 : x
  2. Step 2: Convert to fraction form
    8,143.53/12,212.86 = 4,245.81/x
  3. Step 3: Cross multiply
    8,143.53x = 12,212.86 × 4,245.81
  4. Step 4: Simplify right side
    8,143.53x = 51,853,483.12
  5. Step 5: Solve for x
    x = 51,853,483.12/8,143.53
  6. Step 6: Final answer
    x = 6,367.45

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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.