Home / 6,921.38-10,366.47-3,215.81

Finding the Fourth Proportional to 6,921.38, 10,366.47 and 3,215.81

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Solution

The fourth proportional to 6,921.38, 10,366.47 and 3,215.81 is: 4,816.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.38 : 10,366.47 = 3,215.81 : x
  2. Step 2: Convert to fraction form
    6,921.38/10,366.47 = 3,215.81/x
  3. Step 3: Cross multiply
    6,921.38x = 10,366.47 × 3,215.81
  4. Step 4: Simplify right side
    6,921.38x = 33,336,623.81
  5. Step 5: Solve for x
    x = 33,336,623.81/6,921.38
  6. Step 6: Final answer
    x = 4,816.47

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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.