Home / 6,912.12-9,538.43-3,927.92

Finding the Fourth Proportional to 6,912.12, 9,538.43 and 3,927.92

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Solution

The fourth proportional to 6,912.12, 9,538.43 and 3,927.92 is: 5,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.12 : 9,538.43 = 3,927.92 : x
  2. Step 2: Convert to fraction form
    6,912.12/9,538.43 = 3,927.92/x
  3. Step 3: Cross multiply
    6,912.12x = 9,538.43 × 3,927.92
  4. Step 4: Simplify right side
    6,912.12x = 37,466,122.63
  5. Step 5: Solve for x
    x = 37,466,122.63/6,912.12
  6. Step 6: Final answer
    x = 5,420.35

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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.