Home / 5,115.48-7,058.91-2,877.06

Finding the Fourth Proportional to 5,115.48, 7,058.91 and 2,877.06

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Solution

The fourth proportional to 5,115.48, 7,058.91 and 2,877.06 is: 3,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.48 : 7,058.91 = 2,877.06 : x
  2. Step 2: Convert to fraction form
    5,115.48/7,058.91 = 2,877.06/x
  3. Step 3: Cross multiply
    5,115.48x = 7,058.91 × 2,877.06
  4. Step 4: Simplify right side
    5,115.48x = 20,308,907.60
  5. Step 5: Solve for x
    x = 20,308,907.60/5,115.48
  6. Step 6: Final answer
    x = 3,970.09

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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.