Home / 6,937.20-10,405.65-1,939.44

Finding the Fourth Proportional to 6,937.20, 10,405.65 and 1,939.44

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Solution

The fourth proportional to 6,937.20, 10,405.65 and 1,939.44 is: 2,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,937.20 : 10,405.65 = 1,939.44 : x
  2. Step 2: Convert to fraction form
    6,937.20/10,405.65 = 1,939.44/x
  3. Step 3: Cross multiply
    6,937.20x = 10,405.65 × 1,939.44
  4. Step 4: Simplify right side
    6,937.20x = 20,181,133.84
  5. Step 5: Solve for x
    x = 20,181,133.84/6,937.20
  6. Step 6: Final answer
    x = 2,909.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.