Home / 1,540.49-2,125.77-877.37

Finding the Fourth Proportional to 1,540.49, 2,125.77 and 877.37

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Solution

The fourth proportional to 1,540.49, 2,125.77 and 877.37 is: 1,210.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.49 : 2,125.77 = 877.37 : x
  2. Step 2: Convert to fraction form
    1,540.49/2,125.77 = 877.37/x
  3. Step 3: Cross multiply
    1,540.49x = 2,125.77 × 877.37
  4. Step 4: Simplify right side
    1,540.49x = 1,865,086.82
  5. Step 5: Solve for x
    x = 1,865,086.82/1,540.49
  6. Step 6: Final answer
    x = 1,210.71

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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.