Home / 1,988.89-2,744.70-1,203.19

Finding the Fourth Proportional to 1,988.89, 2,744.70 and 1,203.19

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Solution

The fourth proportional to 1,988.89, 2,744.70 and 1,203.19 is: 1,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.89 : 2,744.70 = 1,203.19 : x
  2. Step 2: Convert to fraction form
    1,988.89/2,744.70 = 1,203.19/x
  3. Step 3: Cross multiply
    1,988.89x = 2,744.70 × 1,203.19
  4. Step 4: Simplify right side
    1,988.89x = 3,302,395.59
  5. Step 5: Solve for x
    x = 3,302,395.59/1,988.89
  6. Step 6: Final answer
    x = 1,660.42

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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.