Home / 5,122.68-7,677.34-2,157.72

Finding the Fourth Proportional to 5,122.68, 7,677.34 and 2,157.72

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Solution

The fourth proportional to 5,122.68, 7,677.34 and 2,157.72 is: 3,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.68 : 7,677.34 = 2,157.72 : x
  2. Step 2: Convert to fraction form
    5,122.68/7,677.34 = 2,157.72/x
  3. Step 3: Cross multiply
    5,122.68x = 7,677.34 × 2,157.72
  4. Step 4: Simplify right side
    5,122.68x = 16,565,550.06
  5. Step 5: Solve for x
    x = 16,565,550.06/5,122.68
  6. Step 6: Final answer
    x = 3,233.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.