Home / 2,126.40-2,934-1,242.03

Finding the Fourth Proportional to 2,126.40, 2,934 and 1,242.03

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Solution

The fourth proportional to 2,126.40, 2,934 and 1,242.03 is: 1,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.40 : 2,934 = 1,242.03 : x
  2. Step 2: Convert to fraction form
    2,126.40/2,934 = 1,242.03/x
  3. Step 3: Cross multiply
    2,126.40x = 2,934 × 1,242.03
  4. Step 4: Simplify right side
    2,126.40x = 3,644,116.02
  5. Step 5: Solve for x
    x = 3,644,116.02/2,126.40
  6. Step 6: Final answer
    x = 1,713.75

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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.