Home / 2,765.20-4,142.40-1,666.30

Finding the Fourth Proportional to 2,765.20, 4,142.40 and 1,666.30

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Solution

The fourth proportional to 2,765.20, 4,142.40 and 1,666.30 is: 2,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.20 : 4,142.40 = 1,666.30 : x
  2. Step 2: Convert to fraction form
    2,765.20/4,142.40 = 1,666.30/x
  3. Step 3: Cross multiply
    2,765.20x = 4,142.40 × 1,666.30
  4. Step 4: Simplify right side
    2,765.20x = 6,902,481.12
  5. Step 5: Solve for x
    x = 6,902,481.12/2,765.20
  6. Step 6: Final answer
    x = 2,496.20

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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.