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Finding the Fourth Proportional to 3,101.40, 4,652.10 and 792.90

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Solution

The fourth proportional to 3,101.40, 4,652.10 and 792.90 is: 1,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.40 : 4,652.10 = 792.90 : x
  2. Step 2: Convert to fraction form
    3,101.40/4,652.10 = 792.90/x
  3. Step 3: Cross multiply
    3,101.40x = 4,652.10 × 792.90
  4. Step 4: Simplify right side
    3,101.40x = 3,688,650.09
  5. Step 5: Solve for x
    x = 3,688,650.09/3,101.40
  6. Step 6: Final answer
    x = 1,189.35

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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.