Home / 5,115.06-7,058.94-2,876.82

Finding the Fourth Proportional to 5,115.06, 7,058.94 and 2,876.82

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Solution

The fourth proportional to 5,115.06, 7,058.94 and 2,876.82 is: 3,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.06 : 7,058.94 = 2,876.82 : x
  2. Step 2: Convert to fraction form
    5,115.06/7,058.94 = 2,876.82/x
  3. Step 3: Cross multiply
    5,115.06x = 7,058.94 × 2,876.82
  4. Step 4: Simplify right side
    5,115.06x = 20,307,299.77
  5. Step 5: Solve for x
    x = 20,307,299.77/5,115.06
  6. Step 6: Final answer
    x = 3,970.10

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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.