Home / 2,188.96-3,020.40-1,257.52

Finding the Fourth Proportional to 2,188.96, 3,020.40 and 1,257.52

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Solution

The fourth proportional to 2,188.96, 3,020.40 and 1,257.52 is: 1,735.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.96 : 3,020.40 = 1,257.52 : x
  2. Step 2: Convert to fraction form
    2,188.96/3,020.40 = 1,257.52/x
  3. Step 3: Cross multiply
    2,188.96x = 3,020.40 × 1,257.52
  4. Step 4: Simplify right side
    2,188.96x = 3,798,213.41
  5. Step 5: Solve for x
    x = 3,798,213.41/2,188.96
  6. Step 6: Final answer
    x = 1,735.17

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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.