Home / 1,578.69-2,177.28-1,185.03

Finding the Fourth Proportional to 1,578.69, 2,177.28 and 1,185.03

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Solution

The fourth proportional to 1,578.69, 2,177.28 and 1,185.03 is: 1,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.69 : 2,177.28 = 1,185.03 : x
  2. Step 2: Convert to fraction form
    1,578.69/2,177.28 = 1,185.03/x
  3. Step 3: Cross multiply
    1,578.69x = 2,177.28 × 1,185.03
  4. Step 4: Simplify right side
    1,578.69x = 2,580,142.12
  5. Step 5: Solve for x
    x = 2,580,142.12/1,578.69
  6. Step 6: Final answer
    x = 1,634.36

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1.5x scale

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.