Home / 3,997.02-5,515.78-2,318.50

Finding the Fourth Proportional to 3,997.02, 5,515.78 and 2,318.50

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Solution

The fourth proportional to 3,997.02, 5,515.78 and 2,318.50 is: 3,199.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.02 : 5,515.78 = 2,318.50 : x
  2. Step 2: Convert to fraction form
    3,997.02/5,515.78 = 2,318.50/x
  3. Step 3: Cross multiply
    3,997.02x = 5,515.78 × 2,318.50
  4. Step 4: Simplify right side
    3,997.02x = 12,788,335.93
  5. Step 5: Solve for x
    x = 12,788,335.93/3,997.02
  6. Step 6: Final answer
    x = 3,199.47

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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.