Home / 1,988.79-2,744.55-1,104.69

Finding the Fourth Proportional to 1,988.79, 2,744.55 and 1,104.69

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Solution

The fourth proportional to 1,988.79, 2,744.55 and 1,104.69 is: 1,524.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.79 : 2,744.55 = 1,104.69 : x
  2. Step 2: Convert to fraction form
    1,988.79/2,744.55 = 1,104.69/x
  3. Step 3: Cross multiply
    1,988.79x = 2,744.55 × 1,104.69
  4. Step 4: Simplify right side
    1,988.79x = 3,031,876.94
  5. Step 5: Solve for x
    x = 3,031,876.94/1,988.79
  6. Step 6: Final answer
    x = 1,524.48

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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.