Home / 5,115.37-7,058.77-2,877.49

Finding the Fourth Proportional to 5,115.37, 7,058.77 and 2,877.49

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Solution

The fourth proportional to 5,115.37, 7,058.77 and 2,877.49 is: 3,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.37 : 7,058.77 = 2,877.49 : x
  2. Step 2: Convert to fraction form
    5,115.37/7,058.77 = 2,877.49/x
  3. Step 3: Cross multiply
    5,115.37x = 7,058.77 × 2,877.49
  4. Step 4: Simplify right side
    5,115.37x = 20,311,540.09
  5. Step 5: Solve for x
    x = 20,311,540.09/5,115.37
  6. Step 6: Final answer
    x = 3,970.69

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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.