Home / 1,989.04-2,747.64-1,891.84

Finding the Fourth Proportional to 1,989.04, 2,747.64 and 1,891.84

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Solution

The fourth proportional to 1,989.04, 2,747.64 and 1,891.84 is: 2,613.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.04 : 2,747.64 = 1,891.84 : x
  2. Step 2: Convert to fraction form
    1,989.04/2,747.64 = 1,891.84/x
  3. Step 3: Cross multiply
    1,989.04x = 2,747.64 × 1,891.84
  4. Step 4: Simplify right side
    1,989.04x = 5,198,095.26
  5. Step 5: Solve for x
    x = 5,198,095.26/1,989.04
  6. Step 6: Final answer
    x = 2,613.37

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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.