Home / 5,157.96-7,117.88-2,919.80

Finding the Fourth Proportional to 5,157.96, 7,117.88 and 2,919.80

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Solution

The fourth proportional to 5,157.96, 7,117.88 and 2,919.80 is: 4,029.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.96 : 7,117.88 = 2,919.80 : x
  2. Step 2: Convert to fraction form
    5,157.96/7,117.88 = 2,919.80/x
  3. Step 3: Cross multiply
    5,157.96x = 7,117.88 × 2,919.80
  4. Step 4: Simplify right side
    5,157.96x = 20,782,750.43
  5. Step 5: Solve for x
    x = 20,782,750.43/5,157.96
  6. Step 6: Final answer
    x = 4,029.26

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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.