Home / 1,988.10-2,743.29-1,202.22

Finding the Fourth Proportional to 1,988.10, 2,743.29 and 1,202.22

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Solution

The fourth proportional to 1,988.10, 2,743.29 and 1,202.22 is: 1,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.10 : 2,743.29 = 1,202.22 : x
  2. Step 2: Convert to fraction form
    1,988.10/2,743.29 = 1,202.22/x
  3. Step 3: Cross multiply
    1,988.10x = 2,743.29 × 1,202.22
  4. Step 4: Simplify right side
    1,988.10x = 3,298,038.10
  5. Step 5: Solve for x
    x = 3,298,038.10/1,988.10
  6. Step 6: Final answer
    x = 1,658.89

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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.