Home / 1,918.53-2,646.87-1,255.77

Finding the Fourth Proportional to 1,918.53, 2,646.87 and 1,255.77

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Solution

The fourth proportional to 1,918.53, 2,646.87 and 1,255.77 is: 1,732.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.53 : 2,646.87 = 1,255.77 : x
  2. Step 2: Convert to fraction form
    1,918.53/2,646.87 = 1,255.77/x
  3. Step 3: Cross multiply
    1,918.53x = 2,646.87 × 1,255.77
  4. Step 4: Simplify right side
    1,918.53x = 3,323,859.94
  5. Step 5: Solve for x
    x = 3,323,859.94/1,918.53
  6. Step 6: Final answer
    x = 1,732.50

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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.