Home / 1,382.16-2,063.07-1,218.12

Finding the Fourth Proportional to 1,382.16, 2,063.07 and 1,218.12

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Solution

The fourth proportional to 1,382.16, 2,063.07 and 1,218.12 is: 1,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.16 : 2,063.07 = 1,218.12 : x
  2. Step 2: Convert to fraction form
    1,382.16/2,063.07 = 1,218.12/x
  3. Step 3: Cross multiply
    1,382.16x = 2,063.07 × 1,218.12
  4. Step 4: Simplify right side
    1,382.16x = 2,513,066.83
  5. Step 5: Solve for x
    x = 2,513,066.83/1,382.16
  6. Step 6: Final answer
    x = 1,818.22

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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.