Home / 8,143.36-12,215.56-3,148.12

Finding the Fourth Proportional to 8,143.36, 12,215.56 and 3,148.12

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Solution

The fourth proportional to 8,143.36, 12,215.56 and 3,148.12 is: 4,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.36 : 12,215.56 = 3,148.12 : x
  2. Step 2: Convert to fraction form
    8,143.36/12,215.56 = 3,148.12/x
  3. Step 3: Cross multiply
    8,143.36x = 12,215.56 × 3,148.12
  4. Step 4: Simplify right side
    8,143.36x = 38,456,048.75
  5. Step 5: Solve for x
    x = 38,456,048.75/8,143.36
  6. Step 6: Final answer
    x = 4,722.38

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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.