Home / 2,121.30-3,181.80-888.26

Finding the Fourth Proportional to 2,121.30, 3,181.80 and 888.26

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Solution

The fourth proportional to 2,121.30, 3,181.80 and 888.26 is: 1,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.30 : 3,181.80 = 888.26 : x
  2. Step 2: Convert to fraction form
    2,121.30/3,181.80 = 888.26/x
  3. Step 3: Cross multiply
    2,121.30x = 3,181.80 × 888.26
  4. Step 4: Simplify right side
    2,121.30x = 2,826,265.67
  5. Step 5: Solve for x
    x = 2,826,265.67/2,121.30
  6. Step 6: Final answer
    x = 1,332.33

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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.