Home / 2,085.28-3,134.40-1,657.60

Finding the Fourth Proportional to 2,085.28, 3,134.40 and 1,657.60

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Solution

The fourth proportional to 2,085.28, 3,134.40 and 1,657.60 is: 2,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.28 : 3,134.40 = 1,657.60 : x
  2. Step 2: Convert to fraction form
    2,085.28/3,134.40 = 1,657.60/x
  3. Step 3: Cross multiply
    2,085.28x = 3,134.40 × 1,657.60
  4. Step 4: Simplify right side
    2,085.28x = 5,195,581.44
  5. Step 5: Solve for x
    x = 5,195,581.44/2,085.28
  6. Step 6: Final answer
    x = 2,491.55

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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.