Home / 1,918.07-2,646.70-1,255.83

Finding the Fourth Proportional to 1,918.07, 2,646.70 and 1,255.83

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Solution

The fourth proportional to 1,918.07, 2,646.70 and 1,255.83 is: 1,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.07 : 2,646.70 = 1,255.83 : x
  2. Step 2: Convert to fraction form
    1,918.07/2,646.70 = 1,255.83/x
  3. Step 3: Cross multiply
    1,918.07x = 2,646.70 × 1,255.83
  4. Step 4: Simplify right side
    1,918.07x = 3,323,805.26
  5. Step 5: Solve for x
    x = 3,323,805.26/1,918.07
  6. Step 6: Final answer
    x = 1,732.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.