Home / 3,180.90-4,388.72-1,854.34

Finding the Fourth Proportional to 3,180.90, 4,388.72 and 1,854.34

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Solution

The fourth proportional to 3,180.90, 4,388.72 and 1,854.34 is: 2,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.90 : 4,388.72 = 1,854.34 : x
  2. Step 2: Convert to fraction form
    3,180.90/4,388.72 = 1,854.34/x
  3. Step 3: Cross multiply
    3,180.90x = 4,388.72 × 1,854.34
  4. Step 4: Simplify right side
    3,180.90x = 8,138,179.04
  5. Step 5: Solve for x
    x = 8,138,179.04/3,180.90
  6. Step 6: Final answer
    x = 2,558.45

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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.