Home / 5,157.86-7,118.16-2,919.83

Finding the Fourth Proportional to 5,157.86, 7,118.16 and 2,919.83

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Solution

The fourth proportional to 5,157.86, 7,118.16 and 2,919.83 is: 4,029.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.86 : 7,118.16 = 2,919.83 : x
  2. Step 2: Convert to fraction form
    5,157.86/7,118.16 = 2,919.83/x
  3. Step 3: Cross multiply
    5,157.86x = 7,118.16 × 2,919.83
  4. Step 4: Simplify right side
    5,157.86x = 20,783,817.11
  5. Step 5: Solve for x
    x = 20,783,817.11/5,157.86
  6. Step 6: Final answer
    x = 4,029.54

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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.