Home / 5,157.15-7,116.49-2,919.27

Finding the Fourth Proportional to 5,157.15, 7,116.49 and 2,919.27

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Solution

The fourth proportional to 5,157.15, 7,116.49 and 2,919.27 is: 4,028.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.15 : 7,116.49 = 2,919.27 : x
  2. Step 2: Convert to fraction form
    5,157.15/7,116.49 = 2,919.27/x
  3. Step 3: Cross multiply
    5,157.15x = 7,116.49 × 2,919.27
  4. Step 4: Simplify right side
    5,157.15x = 20,774,986.10
  5. Step 5: Solve for x
    x = 20,774,986.10/5,157.15
  6. Step 6: Final answer
    x = 4,028.39

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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.