Home / 2,060.90-3,091.51-828.15

Finding the Fourth Proportional to 2,060.90, 3,091.51 and 828.15

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Solution

The fourth proportional to 2,060.90, 3,091.51 and 828.15 is: 1,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,060.90 : 3,091.51 = 828.15 : x
  2. Step 2: Convert to fraction form
    2,060.90/3,091.51 = 828.15/x
  3. Step 3: Cross multiply
    2,060.90x = 3,091.51 × 828.15
  4. Step 4: Simplify right side
    2,060.90x = 2,560,218.55
  5. Step 5: Solve for x
    x = 2,560,218.55/2,060.90
  6. Step 6: Final answer
    x = 1,242.28

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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.