Home / 2,378.90-3,566.96-1,991.32

Finding the Fourth Proportional to 2,378.90, 3,566.96 and 1,991.32

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Solution

The fourth proportional to 2,378.90, 3,566.96 and 1,991.32 is: 2,985.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.90 : 3,566.96 = 1,991.32 : x
  2. Step 2: Convert to fraction form
    2,378.90/3,566.96 = 1,991.32/x
  3. Step 3: Cross multiply
    2,378.90x = 3,566.96 × 1,991.32
  4. Step 4: Simplify right side
    2,378.90x = 7,102,958.79
  5. Step 5: Solve for x
    x = 7,102,958.79/2,378.90
  6. Step 6: Final answer
    x = 2,985.82

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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.