Home / 3,419.74-5,130.30-1,080.11

Finding the Fourth Proportional to 3,419.74, 5,130.30 and 1,080.11

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Solution

The fourth proportional to 3,419.74, 5,130.30 and 1,080.11 is: 1,620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.74 : 5,130.30 = 1,080.11 : x
  2. Step 2: Convert to fraction form
    3,419.74/5,130.30 = 1,080.11/x
  3. Step 3: Cross multiply
    3,419.74x = 5,130.30 × 1,080.11
  4. Step 4: Simplify right side
    3,419.74x = 5,541,288.33
  5. Step 5: Solve for x
    x = 5,541,288.33/3,419.74
  6. Step 6: Final answer
    x = 1,620.38

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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.