Home / 6,892.80-9,511.35-3,908.90

Finding the Fourth Proportional to 6,892.80, 9,511.35 and 3,908.90

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Solution

The fourth proportional to 6,892.80, 9,511.35 and 3,908.90 is: 5,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,892.80 : 9,511.35 = 3,908.90 : x
  2. Step 2: Convert to fraction form
    6,892.80/9,511.35 = 3,908.90/x
  3. Step 3: Cross multiply
    6,892.80x = 9,511.35 × 3,908.90
  4. Step 4: Simplify right side
    6,892.80x = 37,178,868.46
  5. Step 5: Solve for x
    x = 37,178,868.46/6,892.80
  6. Step 6: Final answer
    x = 5,393.87

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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.