Home / 5,156.66-7,116.19-2,918.49

Finding the Fourth Proportional to 5,156.66, 7,116.19 and 2,918.49

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Solution

The fourth proportional to 5,156.66, 7,116.19 and 2,918.49 is: 4,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.66 : 7,116.19 = 2,918.49 : x
  2. Step 2: Convert to fraction form
    5,156.66/7,116.19 = 2,918.49/x
  3. Step 3: Cross multiply
    5,156.66x = 7,116.19 × 2,918.49
  4. Step 4: Simplify right side
    5,156.66x = 20,768,529.35
  5. Step 5: Solve for x
    x = 20,768,529.35/5,156.66
  6. Step 6: Final answer
    x = 4,027.52

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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.