Home / 3,680.15-5,080.47-2,188.55

Finding the Fourth Proportional to 3,680.15, 5,080.47 and 2,188.55

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Solution

The fourth proportional to 3,680.15, 5,080.47 and 2,188.55 is: 3,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.15 : 5,080.47 = 2,188.55 : x
  2. Step 2: Convert to fraction form
    3,680.15/5,080.47 = 2,188.55/x
  3. Step 3: Cross multiply
    3,680.15x = 5,080.47 × 2,188.55
  4. Step 4: Simplify right side
    3,680.15x = 11,118,862.62
  5. Step 5: Solve for x
    x = 11,118,862.62/3,680.15
  6. Step 6: Final answer
    x = 3,021.31

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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.