Home / 4,142.72-6,214.07-1,221.05

Finding the Fourth Proportional to 4,142.72, 6,214.07 and 1,221.05

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Solution

The fourth proportional to 4,142.72, 6,214.07 and 1,221.05 is: 1,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.72 : 6,214.07 = 1,221.05 : x
  2. Step 2: Convert to fraction form
    4,142.72/6,214.07 = 1,221.05/x
  3. Step 3: Cross multiply
    4,142.72x = 6,214.07 × 1,221.05
  4. Step 4: Simplify right side
    4,142.72x = 7,587,653.00
  5. Step 5: Solve for x
    x = 7,587,653.00/4,142.72
  6. Step 6: Final answer
    x = 1,831.57

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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.