Home / 2,155.60-3,230.62-1,876.81

Finding the Fourth Proportional to 2,155.60, 3,230.62 and 1,876.81

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Solution

The fourth proportional to 2,155.60, 3,230.62 and 1,876.81 is: 2,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.60 : 3,230.62 = 1,876.81 : x
  2. Step 2: Convert to fraction form
    2,155.60/3,230.62 = 1,876.81/x
  3. Step 3: Cross multiply
    2,155.60x = 3,230.62 × 1,876.81
  4. Step 4: Simplify right side
    2,155.60x = 6,063,259.92
  5. Step 5: Solve for x
    x = 6,063,259.92/2,155.60
  6. Step 6: Final answer
    x = 2,812.79

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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.