Home / 1,382.34-2,063.40-1,218.32

Finding the Fourth Proportional to 1,382.34, 2,063.40 and 1,218.32

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Solution

The fourth proportional to 1,382.34, 2,063.40 and 1,218.32 is: 1,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.34 : 2,063.40 = 1,218.32 : x
  2. Step 2: Convert to fraction form
    1,382.34/2,063.40 = 1,218.32/x
  3. Step 3: Cross multiply
    1,382.34x = 2,063.40 × 1,218.32
  4. Step 4: Simplify right side
    1,382.34x = 2,513,871.17
  5. Step 5: Solve for x
    x = 2,513,871.17/1,382.34
  6. Step 6: Final answer
    x = 1,818.56

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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.