Home / 3,687.12-5,086.80-2,509.20

Finding the Fourth Proportional to 3,687.12, 5,086.80 and 2,509.20

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Solution

The fourth proportional to 3,687.12, 5,086.80 and 2,509.20 is: 3,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.12 : 5,086.80 = 2,509.20 : x
  2. Step 2: Convert to fraction form
    3,687.12/5,086.80 = 2,509.20/x
  3. Step 3: Cross multiply
    3,687.12x = 5,086.80 × 2,509.20
  4. Step 4: Simplify right side
    3,687.12x = 12,763,798.56
  5. Step 5: Solve for x
    x = 12,763,798.56/3,687.12
  6. Step 6: Final answer
    x = 3,461.73

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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.