Home / 5,157.39-7,117.37-2,919.23

Finding the Fourth Proportional to 5,157.39, 7,117.37 and 2,919.23

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Solution

The fourth proportional to 5,157.39, 7,117.37 and 2,919.23 is: 4,028.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.39 : 7,117.37 = 2,919.23 : x
  2. Step 2: Convert to fraction form
    5,157.39/7,117.37 = 2,919.23/x
  3. Step 3: Cross multiply
    5,157.39x = 7,117.37 × 2,919.23
  4. Step 4: Simplify right side
    5,157.39x = 20,777,240.03
  5. Step 5: Solve for x
    x = 20,777,240.03/5,157.39
  6. Step 6: Final answer
    x = 4,028.63

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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.