Home / 5,115.64-7,058.92-2,877.44

Finding the Fourth Proportional to 5,115.64, 7,058.92 and 2,877.44

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Solution

The fourth proportional to 5,115.64, 7,058.92 and 2,877.44 is: 3,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.64 : 7,058.92 = 2,877.44 : x
  2. Step 2: Convert to fraction form
    5,115.64/7,058.92 = 2,877.44/x
  3. Step 3: Cross multiply
    5,115.64x = 7,058.92 × 2,877.44
  4. Step 4: Simplify right side
    5,115.64x = 20,311,618.76
  5. Step 5: Solve for x
    x = 20,311,618.76/5,115.64
  6. Step 6: Final answer
    x = 3,970.49

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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.