Home / 5,273.64-7,910.48-1,985.85

Finding the Fourth Proportional to 5,273.64, 7,910.48 and 1,985.85

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Solution

The fourth proportional to 5,273.64, 7,910.48 and 1,985.85 is: 2,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,273.64 : 7,910.48 = 1,985.85 : x
  2. Step 2: Convert to fraction form
    5,273.64/7,910.48 = 1,985.85/x
  3. Step 3: Cross multiply
    5,273.64x = 7,910.48 × 1,985.85
  4. Step 4: Simplify right side
    5,273.64x = 15,709,026.71
  5. Step 5: Solve for x
    x = 15,709,026.71/5,273.64
  6. Step 6: Final answer
    x = 2,978.78

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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.