Home / 2,721.80-3,756.93-2,163.26

Finding the Fourth Proportional to 2,721.80, 3,756.93 and 2,163.26

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Solution

The fourth proportional to 2,721.80, 3,756.93 and 2,163.26 is: 2,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.80 : 3,756.93 = 2,163.26 : x
  2. Step 2: Convert to fraction form
    2,721.80/3,756.93 = 2,163.26/x
  3. Step 3: Cross multiply
    2,721.80x = 3,756.93 × 2,163.26
  4. Step 4: Simplify right side
    2,721.80x = 8,127,216.39
  5. Step 5: Solve for x
    x = 8,127,216.39/2,721.80
  6. Step 6: Final answer
    x = 2,985.97

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1.5x scale

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.