Home / 2,128.58-3,192.28-1,347.41

Finding the Fourth Proportional to 2,128.58, 3,192.28 and 1,347.41

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Solution

The fourth proportional to 2,128.58, 3,192.28 and 1,347.41 is: 2,020.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.58 : 3,192.28 = 1,347.41 : x
  2. Step 2: Convert to fraction form
    2,128.58/3,192.28 = 1,347.41/x
  3. Step 3: Cross multiply
    2,128.58x = 3,192.28 × 1,347.41
  4. Step 4: Simplify right side
    2,128.58x = 4,301,290.66
  5. Step 5: Solve for x
    x = 4,301,290.66/2,128.58
  6. Step 6: Final answer
    x = 2,020.74

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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.