Home / 1,988.81-2,744.60-1,104.69

Finding the Fourth Proportional to 1,988.81, 2,744.60 and 1,104.69

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Solution

The fourth proportional to 1,988.81, 2,744.60 and 1,104.69 is: 1,524.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.81 : 2,744.60 = 1,104.69 : x
  2. Step 2: Convert to fraction form
    1,988.81/2,744.60 = 1,104.69/x
  3. Step 3: Cross multiply
    1,988.81x = 2,744.60 × 1,104.69
  4. Step 4: Simplify right side
    1,988.81x = 3,031,932.17
  5. Step 5: Solve for x
    x = 3,031,932.17/1,988.81
  6. Step 6: Final answer
    x = 1,524.50

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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.