Home / 5,090.20-7,022.91-2,851.72

Finding the Fourth Proportional to 5,090.20, 7,022.91 and 2,851.72

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Solution

The fourth proportional to 5,090.20, 7,022.91 and 2,851.72 is: 3,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.20 : 7,022.91 = 2,851.72 : x
  2. Step 2: Convert to fraction form
    5,090.20/7,022.91 = 2,851.72/x
  3. Step 3: Cross multiply
    5,090.20x = 7,022.91 × 2,851.72
  4. Step 4: Simplify right side
    5,090.20x = 20,027,372.91
  5. Step 5: Solve for x
    x = 20,027,372.91/5,090.20
  6. Step 6: Final answer
    x = 3,934.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.