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Finding the Fourth Proportional to 2,060.80, 3,090.88 and 762.24

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Solution

The fourth proportional to 2,060.80, 3,090.88 and 762.24 is: 1,143.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,060.80 : 3,090.88 = 762.24 : x
  2. Step 2: Convert to fraction form
    2,060.80/3,090.88 = 762.24/x
  3. Step 3: Cross multiply
    2,060.80x = 3,090.88 × 762.24
  4. Step 4: Simplify right side
    2,060.80x = 2,355,992.37
  5. Step 5: Solve for x
    x = 2,355,992.37/2,060.80
  6. Step 6: Final answer
    x = 1,143.24

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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.