Home / 6,912.08-9,538.80-4,119.20

Finding the Fourth Proportional to 6,912.08, 9,538.80 and 4,119.20

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Solution

The fourth proportional to 6,912.08, 9,538.80 and 4,119.20 is: 5,684.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.08 : 9,538.80 = 4,119.20 : x
  2. Step 2: Convert to fraction form
    6,912.08/9,538.80 = 4,119.20/x
  3. Step 3: Cross multiply
    6,912.08x = 9,538.80 × 4,119.20
  4. Step 4: Simplify right side
    6,912.08x = 39,292,224.96
  5. Step 5: Solve for x
    x = 39,292,224.96/6,912.08
  6. Step 6: Final answer
    x = 5,684.57

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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.