Home / 3,997.02-5,515.65-2,318.31

Finding the Fourth Proportional to 3,997.02, 5,515.65 and 2,318.31

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Solution

The fourth proportional to 3,997.02, 5,515.65 and 2,318.31 is: 3,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.02 : 5,515.65 = 2,318.31 : x
  2. Step 2: Convert to fraction form
    3,997.02/5,515.65 = 2,318.31/x
  3. Step 3: Cross multiply
    3,997.02x = 5,515.65 × 2,318.31
  4. Step 4: Simplify right side
    3,997.02x = 12,786,986.55
  5. Step 5: Solve for x
    x = 12,786,986.55/3,997.02
  6. Step 6: Final answer
    x = 3,199.13

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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.