Home / 1,816.14-2,711.05-1,680.78

Finding the Fourth Proportional to 1,816.14, 2,711.05 and 1,680.78

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Solution

The fourth proportional to 1,816.14, 2,711.05 and 1,680.78 is: 2,508.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.14 : 2,711.05 = 1,680.78 : x
  2. Step 2: Convert to fraction form
    1,816.14/2,711.05 = 1,680.78/x
  3. Step 3: Cross multiply
    1,816.14x = 2,711.05 × 1,680.78
  4. Step 4: Simplify right side
    1,816.14x = 4,556,678.62
  5. Step 5: Solve for x
    x = 4,556,678.62/1,816.14
  6. Step 6: Final answer
    x = 2,508.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.