Home / 3,421.01-5,130.30-1,080.32

Finding the Fourth Proportional to 3,421.01, 5,130.30 and 1,080.32

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Solution

The fourth proportional to 3,421.01, 5,130.30 and 1,080.32 is: 1,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.01 : 5,130.30 = 1,080.32 : x
  2. Step 2: Convert to fraction form
    3,421.01/5,130.30 = 1,080.32/x
  3. Step 3: Cross multiply
    3,421.01x = 5,130.30 × 1,080.32
  4. Step 4: Simplify right side
    3,421.01x = 5,542,365.70
  5. Step 5: Solve for x
    x = 5,542,365.70/3,421.01
  6. Step 6: Final answer
    x = 1,620.10

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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.