Home / 1,989.89-2,744.92-1,242.93

Finding the Fourth Proportional to 1,989.89, 2,744.92 and 1,242.93

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Solution

The fourth proportional to 1,989.89, 2,744.92 and 1,242.93 is: 1,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.89 : 2,744.92 = 1,242.93 : x
  2. Step 2: Convert to fraction form
    1,989.89/2,744.92 = 1,242.93/x
  3. Step 3: Cross multiply
    1,989.89x = 2,744.92 × 1,242.93
  4. Step 4: Simplify right side
    1,989.89x = 3,411,743.42
  5. Step 5: Solve for x
    x = 3,411,743.42/1,989.89
  6. Step 6: Final answer
    x = 1,714.54

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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.