Home / 3,480.15-5,218.93-1,399.46

Finding the Fourth Proportional to 3,480.15, 5,218.93 and 1,399.46

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Solution

The fourth proportional to 3,480.15, 5,218.93 and 1,399.46 is: 2,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.15 : 5,218.93 = 1,399.46 : x
  2. Step 2: Convert to fraction form
    3,480.15/5,218.93 = 1,399.46/x
  3. Step 3: Cross multiply
    3,480.15x = 5,218.93 × 1,399.46
  4. Step 4: Simplify right side
    3,480.15x = 7,303,659.43
  5. Step 5: Solve for x
    x = 7,303,659.43/3,480.15
  6. Step 6: Final answer
    x = 2,098.66

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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.