Home / 3,661.20-5,489.78-1,810.35

Finding the Fourth Proportional to 3,661.20, 5,489.78 and 1,810.35

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Solution

The fourth proportional to 3,661.20, 5,489.78 and 1,810.35 is: 2,714.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.20 : 5,489.78 = 1,810.35 : x
  2. Step 2: Convert to fraction form
    3,661.20/5,489.78 = 1,810.35/x
  3. Step 3: Cross multiply
    3,661.20x = 5,489.78 × 1,810.35
  4. Step 4: Simplify right side
    3,661.20x = 9,938,414.17
  5. Step 5: Solve for x
    x = 9,938,414.17/3,661.20
  6. Step 6: Final answer
    x = 2,714.52

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1.5x scale

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.