Home / 3,610.20-5,415.30-874.20

Finding the Fourth Proportional to 3,610.20, 5,415.30 and 874.20

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Solution

The fourth proportional to 3,610.20, 5,415.30 and 874.20 is: 1,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.20 : 5,415.30 = 874.20 : x
  2. Step 2: Convert to fraction form
    3,610.20/5,415.30 = 874.20/x
  3. Step 3: Cross multiply
    3,610.20x = 5,415.30 × 874.20
  4. Step 4: Simplify right side
    3,610.20x = 4,734,055.26
  5. Step 5: Solve for x
    x = 4,734,055.26/3,610.20
  6. Step 6: Final answer
    x = 1,311.30

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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.