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Finding the Fourth Proportional to 3,111.60, 4,667.41 and 803.10

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Solution

The fourth proportional to 3,111.60, 4,667.41 and 803.10 is: 1,204.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.60 : 4,667.41 = 803.10 : x
  2. Step 2: Convert to fraction form
    3,111.60/4,667.41 = 803.10/x
  3. Step 3: Cross multiply
    3,111.60x = 4,667.41 × 803.10
  4. Step 4: Simplify right side
    3,111.60x = 3,748,396.97
  5. Step 5: Solve for x
    x = 3,748,396.97/3,111.60
  6. Step 6: Final answer
    x = 1,204.65

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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.