Home / 3,420.05-5,130.08-1,080.27

Finding the Fourth Proportional to 3,420.05, 5,130.08 and 1,080.27

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Solution

The fourth proportional to 3,420.05, 5,130.08 and 1,080.27 is: 1,620.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.05 : 5,130.08 = 1,080.27 : x
  2. Step 2: Convert to fraction form
    3,420.05/5,130.08 = 1,080.27/x
  3. Step 3: Cross multiply
    3,420.05x = 5,130.08 × 1,080.27
  4. Step 4: Simplify right side
    3,420.05x = 5,541,871.52
  5. Step 5: Solve for x
    x = 5,541,871.52/3,420.05
  6. Step 6: Final answer
    x = 1,620.41

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Similar ratio
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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.