Home / 1,812.65-2,718.39-1,118.27

Finding the Fourth Proportional to 1,812.65, 2,718.39 and 1,118.27

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Solution

The fourth proportional to 1,812.65, 2,718.39 and 1,118.27 is: 1,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.65 : 2,718.39 = 1,118.27 : x
  2. Step 2: Convert to fraction form
    1,812.65/2,718.39 = 1,118.27/x
  3. Step 3: Cross multiply
    1,812.65x = 2,718.39 × 1,118.27
  4. Step 4: Simplify right side
    1,812.65x = 3,039,904.97
  5. Step 5: Solve for x
    x = 3,039,904.97/1,812.65
  6. Step 6: Final answer
    x = 1,677.05

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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.