Home / 3,891.84-5,370.75-2,319.90

Finding the Fourth Proportional to 3,891.84, 5,370.75 and 2,319.90

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Solution

The fourth proportional to 3,891.84, 5,370.75 and 2,319.90 is: 3,201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.84 : 5,370.75 = 2,319.90 : x
  2. Step 2: Convert to fraction form
    3,891.84/5,370.75 = 2,319.90/x
  3. Step 3: Cross multiply
    3,891.84x = 5,370.75 × 2,319.90
  4. Step 4: Simplify right side
    3,891.84x = 12,459,602.93
  5. Step 5: Solve for x
    x = 12,459,602.93/3,891.84
  6. Step 6: Final answer
    x = 3,201.47

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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.