Home / 6,912.65-9,538.34-3,887.76

Finding the Fourth Proportional to 6,912.65, 9,538.34 and 3,887.76

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Solution

The fourth proportional to 6,912.65, 9,538.34 and 3,887.76 is: 5,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.65 : 9,538.34 = 3,887.76 : x
  2. Step 2: Convert to fraction form
    6,912.65/9,538.34 = 3,887.76/x
  3. Step 3: Cross multiply
    6,912.65x = 9,538.34 × 3,887.76
  4. Step 4: Simplify right side
    6,912.65x = 37,082,745.81
  5. Step 5: Solve for x
    x = 37,082,745.81/6,912.65
  6. Step 6: Final answer
    x = 5,364.48

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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.