Home / 1,988.58-2,744.11-1,242.50

Finding the Fourth Proportional to 1,988.58, 2,744.11 and 1,242.50

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Solution

The fourth proportional to 1,988.58, 2,744.11 and 1,242.50 is: 1,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.58 : 2,744.11 = 1,242.50 : x
  2. Step 2: Convert to fraction form
    1,988.58/2,744.11 = 1,242.50/x
  3. Step 3: Cross multiply
    1,988.58x = 2,744.11 × 1,242.50
  4. Step 4: Simplify right side
    1,988.58x = 3,409,556.68
  5. Step 5: Solve for x
    x = 3,409,556.68/1,988.58
  6. Step 6: Final answer
    x = 1,714.57

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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.