Home / 5,115.52-7,058.53-2,877.22

Finding the Fourth Proportional to 5,115.52, 7,058.53 and 2,877.22

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Solution

The fourth proportional to 5,115.52, 7,058.53 and 2,877.22 is: 3,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.52 : 7,058.53 = 2,877.22 : x
  2. Step 2: Convert to fraction form
    5,115.52/7,058.53 = 2,877.22/x
  3. Step 3: Cross multiply
    5,115.52x = 7,058.53 × 2,877.22
  4. Step 4: Simplify right side
    5,115.52x = 20,308,918.85
  5. Step 5: Solve for x
    x = 20,308,918.85/5,115.52
  6. Step 6: Final answer
    x = 3,970.06

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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.