Home / 3,688.65-5,528.98-1,815.83

Finding the Fourth Proportional to 3,688.65, 5,528.98 and 1,815.83

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Solution

The fourth proportional to 3,688.65, 5,528.98 and 1,815.83 is: 2,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.65 : 5,528.98 = 1,815.83 : x
  2. Step 2: Convert to fraction form
    3,688.65/5,528.98 = 1,815.83/x
  3. Step 3: Cross multiply
    3,688.65x = 5,528.98 × 1,815.83
  4. Step 4: Simplify right side
    3,688.65x = 10,039,687.75
  5. Step 5: Solve for x
    x = 10,039,687.75/3,688.65
  6. Step 6: Final answer
    x = 2,721.78

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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.