Home / 2,691.40-4,037.10-1,816.60

Finding the Fourth Proportional to 2,691.40, 4,037.10 and 1,816.60

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Solution

The fourth proportional to 2,691.40, 4,037.10 and 1,816.60 is: 2,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.40 : 4,037.10 = 1,816.60 : x
  2. Step 2: Convert to fraction form
    2,691.40/4,037.10 = 1,816.60/x
  3. Step 3: Cross multiply
    2,691.40x = 4,037.10 × 1,816.60
  4. Step 4: Simplify right side
    2,691.40x = 7,333,795.86
  5. Step 5: Solve for x
    x = 7,333,795.86/2,691.40
  6. Step 6: Final answer
    x = 2,724.90

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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.