Home / 5,157.94-7,117.52-2,919.70

Finding the Fourth Proportional to 5,157.94, 7,117.52 and 2,919.70

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Solution

The fourth proportional to 5,157.94, 7,117.52 and 2,919.70 is: 4,028.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.94 : 7,117.52 = 2,919.70 : x
  2. Step 2: Convert to fraction form
    5,157.94/7,117.52 = 2,919.70/x
  3. Step 3: Cross multiply
    5,157.94x = 7,117.52 × 2,919.70
  4. Step 4: Simplify right side
    5,157.94x = 20,781,023.14
  5. Step 5: Solve for x
    x = 20,781,023.14/5,157.94
  6. Step 6: Final answer
    x = 4,028.94

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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.