Home / 2,361.36-3,543.06-1,128.78

Finding the Fourth Proportional to 2,361.36, 3,543.06 and 1,128.78

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Solution

The fourth proportional to 2,361.36, 3,543.06 and 1,128.78 is: 1,693.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,361.36 : 3,543.06 = 1,128.78 : x
  2. Step 2: Convert to fraction form
    2,361.36/3,543.06 = 1,128.78/x
  3. Step 3: Cross multiply
    2,361.36x = 3,543.06 × 1,128.78
  4. Step 4: Simplify right side
    2,361.36x = 3,999,335.27
  5. Step 5: Solve for x
    x = 3,999,335.27/2,361.36
  6. Step 6: Final answer
    x = 1,693.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.