Home / 6,865.39-9,474.21-3,721.57

Finding the Fourth Proportional to 6,865.39, 9,474.21 and 3,721.57

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Solution

The fourth proportional to 6,865.39, 9,474.21 and 3,721.57 is: 5,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,865.39 : 9,474.21 = 3,721.57 : x
  2. Step 2: Convert to fraction form
    6,865.39/9,474.21 = 3,721.57/x
  3. Step 3: Cross multiply
    6,865.39x = 9,474.21 × 3,721.57
  4. Step 4: Simplify right side
    6,865.39x = 35,258,935.71
  5. Step 5: Solve for x
    x = 35,258,935.71/6,865.39
  6. Step 6: Final answer
    x = 5,135.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.