Home / 3,135.56-4,328.16-1,809.80

Finding the Fourth Proportional to 3,135.56, 4,328.16 and 1,809.80

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Solution

The fourth proportional to 3,135.56, 4,328.16 and 1,809.80 is: 2,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.56 : 4,328.16 = 1,809.80 : x
  2. Step 2: Convert to fraction form
    3,135.56/4,328.16 = 1,809.80/x
  3. Step 3: Cross multiply
    3,135.56x = 4,328.16 × 1,809.80
  4. Step 4: Simplify right side
    3,135.56x = 7,833,103.97
  5. Step 5: Solve for x
    x = 7,833,103.97/3,135.56
  6. Step 6: Final answer
    x = 2,498.15

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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.