Home / 9,357.28-12,912.96-5,165.56

Finding the Fourth Proportional to 9,357.28, 12,912.96 and 5,165.56

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Solution

The fourth proportional to 9,357.28, 12,912.96 and 5,165.56 is: 7,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.28 : 12,912.96 = 5,165.56 : x
  2. Step 2: Convert to fraction form
    9,357.28/12,912.96 = 5,165.56/x
  3. Step 3: Cross multiply
    9,357.28x = 12,912.96 × 5,165.56
  4. Step 4: Simplify right side
    9,357.28x = 66,702,669.66
  5. Step 5: Solve for x
    x = 66,702,669.66/9,357.28
  6. Step 6: Final answer
    x = 7,128.43

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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.