Home / 3,080.45-4,251.18-1,683.20

Finding the Fourth Proportional to 3,080.45, 4,251.18 and 1,683.20

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Solution

The fourth proportional to 3,080.45, 4,251.18 and 1,683.20 is: 2,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.45 : 4,251.18 = 1,683.20 : x
  2. Step 2: Convert to fraction form
    3,080.45/4,251.18 = 1,683.20/x
  3. Step 3: Cross multiply
    3,080.45x = 4,251.18 × 1,683.20
  4. Step 4: Simplify right side
    3,080.45x = 7,155,586.18
  5. Step 5: Solve for x
    x = 7,155,586.18/3,080.45
  6. Step 6: Final answer
    x = 2,322.90

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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.