Home / 6,215.68-9,328.64-3,138.56

Finding the Fourth Proportional to 6,215.68, 9,328.64 and 3,138.56

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Solution

The fourth proportional to 6,215.68, 9,328.64 and 3,138.56 is: 4,710.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.68 : 9,328.64 = 3,138.56 : x
  2. Step 2: Convert to fraction form
    6,215.68/9,328.64 = 3,138.56/x
  3. Step 3: Cross multiply
    6,215.68x = 9,328.64 × 3,138.56
  4. Step 4: Simplify right side
    6,215.68x = 29,278,496.36
  5. Step 5: Solve for x
    x = 29,278,496.36/6,215.68
  6. Step 6: Final answer
    x = 4,710.43

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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.