Home / 1,918.69-2,877.55-822.93

Finding the Fourth Proportional to 1,918.69, 2,877.55 and 822.93

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Solution

The fourth proportional to 1,918.69, 2,877.55 and 822.93 is: 1,234.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.69 : 2,877.55 = 822.93 : x
  2. Step 2: Convert to fraction form
    1,918.69/2,877.55 = 822.93/x
  3. Step 3: Cross multiply
    1,918.69x = 2,877.55 × 822.93
  4. Step 4: Simplify right side
    1,918.69x = 2,368,022.22
  5. Step 5: Solve for x
    x = 2,368,022.22/1,918.69
  6. Step 6: Final answer
    x = 1,234.19

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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.