Home / 1,918.35-2,646.63-1,255.58

Finding the Fourth Proportional to 1,918.35, 2,646.63 and 1,255.58

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Solution

The fourth proportional to 1,918.35, 2,646.63 and 1,255.58 is: 1,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.35 : 2,646.63 = 1,255.58 : x
  2. Step 2: Convert to fraction form
    1,918.35/2,646.63 = 1,255.58/x
  3. Step 3: Cross multiply
    1,918.35x = 2,646.63 × 1,255.58
  4. Step 4: Simplify right side
    1,918.35x = 3,323,055.70
  5. Step 5: Solve for x
    x = 3,323,055.70/1,918.35
  6. Step 6: Final answer
    x = 1,732.25

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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.