Home / 6,912.08-9,539.35-4,080.39

Finding the Fourth Proportional to 6,912.08, 9,539.35 and 4,080.39

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Solution

The fourth proportional to 6,912.08, 9,539.35 and 4,080.39 is: 5,631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.08 : 9,539.35 = 4,080.39 : x
  2. Step 2: Convert to fraction form
    6,912.08/9,539.35 = 4,080.39/x
  3. Step 3: Cross multiply
    6,912.08x = 9,539.35 × 4,080.39
  4. Step 4: Simplify right side
    6,912.08x = 38,924,245.33
  5. Step 5: Solve for x
    x = 38,924,245.33/6,912.08
  6. Step 6: Final answer
    x = 5,631.34

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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.