Home / 3,085.76-4,252.16-2,619.20

Finding the Fourth Proportional to 3,085.76, 4,252.16 and 2,619.20

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Solution

The fourth proportional to 3,085.76, 4,252.16 and 2,619.20 is: 3,609.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.76 : 4,252.16 = 2,619.20 : x
  2. Step 2: Convert to fraction form
    3,085.76/4,252.16 = 2,619.20/x
  3. Step 3: Cross multiply
    3,085.76x = 4,252.16 × 2,619.20
  4. Step 4: Simplify right side
    3,085.76x = 11,137,257.47
  5. Step 5: Solve for x
    x = 11,137,257.47/3,085.76
  6. Step 6: Final answer
    x = 3,609.24

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1.5x scale

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.