Home / 5,156.90-7,116.68-2,918.73

Finding the Fourth Proportional to 5,156.90, 7,116.68 and 2,918.73

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Solution

The fourth proportional to 5,156.90, 7,116.68 and 2,918.73 is: 4,027.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.90 : 7,116.68 = 2,918.73 : x
  2. Step 2: Convert to fraction form
    5,156.90/7,116.68 = 2,918.73/x
  3. Step 3: Cross multiply
    5,156.90x = 7,116.68 × 2,918.73
  4. Step 4: Simplify right side
    5,156.90x = 20,771,667.42
  5. Step 5: Solve for x
    x = 20,771,667.42/5,156.90
  6. Step 6: Final answer
    x = 4,027.94

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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.