Home / 4,143.23-6,212.70-1,221.15

Finding the Fourth Proportional to 4,143.23, 6,212.70 and 1,221.15

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Solution

The fourth proportional to 4,143.23, 6,212.70 and 1,221.15 is: 1,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143.23 : 6,212.70 = 1,221.15 : x
  2. Step 2: Convert to fraction form
    4,143.23/6,212.70 = 1,221.15/x
  3. Step 3: Cross multiply
    4,143.23x = 6,212.70 × 1,221.15
  4. Step 4: Simplify right side
    4,143.23x = 7,586,638.61
  5. Step 5: Solve for x
    x = 7,586,638.61/4,143.23
  6. Step 6: Final answer
    x = 1,831.09

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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.