Home / 5,156.82-7,116.28-2,918.63

Finding the Fourth Proportional to 5,156.82, 7,116.28 and 2,918.63

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Solution

The fourth proportional to 5,156.82, 7,116.28 and 2,918.63 is: 4,027.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.82 : 7,116.28 = 2,918.63 : x
  2. Step 2: Convert to fraction form
    5,156.82/7,116.28 = 2,918.63/x
  3. Step 3: Cross multiply
    5,156.82x = 7,116.28 × 2,918.63
  4. Step 4: Simplify right side
    5,156.82x = 20,769,798.79
  5. Step 5: Solve for x
    x = 20,769,798.79/5,156.82
  6. Step 6: Final answer
    x = 4,027.64

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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.