Home / 2,108.24-3,162.42-874.80

Finding the Fourth Proportional to 2,108.24, 3,162.42 and 874.80

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Solution

The fourth proportional to 2,108.24, 3,162.42 and 874.80 is: 1,312.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.24 : 3,162.42 = 874.80 : x
  2. Step 2: Convert to fraction form
    2,108.24/3,162.42 = 874.80/x
  3. Step 3: Cross multiply
    2,108.24x = 3,162.42 × 874.80
  4. Step 4: Simplify right side
    2,108.24x = 2,766,485.02
  5. Step 5: Solve for x
    x = 2,766,485.02/2,108.24
  6. Step 6: Final answer
    x = 1,312.23

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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.