Home / 1,815.81-2,717.54-1,406.76

Finding the Fourth Proportional to 1,815.81, 2,717.54 and 1,406.76

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Solution

The fourth proportional to 1,815.81, 2,717.54 and 1,406.76 is: 2,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.81 : 2,717.54 = 1,406.76 : x
  2. Step 2: Convert to fraction form
    1,815.81/2,717.54 = 1,406.76/x
  3. Step 3: Cross multiply
    1,815.81x = 2,717.54 × 1,406.76
  4. Step 4: Simplify right side
    1,815.81x = 3,822,919.54
  5. Step 5: Solve for x
    x = 3,822,919.54/1,815.81
  6. Step 6: Final answer
    x = 2,105.35

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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.