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Finding the Fourth Proportional to 2,669.94, 3,997.90 and 1,885.70

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Solution

The fourth proportional to 2,669.94, 3,997.90 and 1,885.70 is: 2,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.94 : 3,997.90 = 1,885.70 : x
  2. Step 2: Convert to fraction form
    2,669.94/3,997.90 = 1,885.70/x
  3. Step 3: Cross multiply
    2,669.94x = 3,997.90 × 1,885.70
  4. Step 4: Simplify right side
    2,669.94x = 7,538,840.03
  5. Step 5: Solve for x
    x = 7,538,840.03/2,669.94
  6. Step 6: Final answer
    x = 2,823.60

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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.