Home / 5,275.87-7,909.14-1,991.27

Finding the Fourth Proportional to 5,275.87, 7,909.14 and 1,991.27

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Solution

The fourth proportional to 5,275.87, 7,909.14 and 1,991.27 is: 2,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.87 : 7,909.14 = 1,991.27 : x
  2. Step 2: Convert to fraction form
    5,275.87/7,909.14 = 1,991.27/x
  3. Step 3: Cross multiply
    5,275.87x = 7,909.14 × 1,991.27
  4. Step 4: Simplify right side
    5,275.87x = 15,749,215.96
  5. Step 5: Solve for x
    x = 15,749,215.96/5,275.87
  6. Step 6: Final answer
    x = 2,985.14

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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.