Home / 6,917.30-10,375.96-1,985.79

Finding the Fourth Proportional to 6,917.30, 10,375.96 and 1,985.79

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Solution

The fourth proportional to 6,917.30, 10,375.96 and 1,985.79 is: 2,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.30 : 10,375.96 = 1,985.79 : x
  2. Step 2: Convert to fraction form
    6,917.30/10,375.96 = 1,985.79/x
  3. Step 3: Cross multiply
    6,917.30x = 10,375.96 × 1,985.79
  4. Step 4: Simplify right side
    6,917.30x = 20,604,477.61
  5. Step 5: Solve for x
    x = 20,604,477.61/6,917.30
  6. Step 6: Final answer
    x = 2,978.69

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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.