Home / 3,407.60-5,109.35-1,327.21

Finding the Fourth Proportional to 3,407.60, 5,109.35 and 1,327.21

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Solution

The fourth proportional to 3,407.60, 5,109.35 and 1,327.21 is: 1,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.60 : 5,109.35 = 1,327.21 : x
  2. Step 2: Convert to fraction form
    3,407.60/5,109.35 = 1,327.21/x
  3. Step 3: Cross multiply
    3,407.60x = 5,109.35 × 1,327.21
  4. Step 4: Simplify right side
    3,407.60x = 6,781,161.00
  5. Step 5: Solve for x
    x = 6,781,161.00/3,407.60
  6. Step 6: Final answer
    x = 1,990.01

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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.