Home / 5,015.42-6,921.34-2,919.50

Finding the Fourth Proportional to 5,015.42, 6,921.34 and 2,919.50

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Solution

The fourth proportional to 5,015.42, 6,921.34 and 2,919.50 is: 4,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.42 : 6,921.34 = 2,919.50 : x
  2. Step 2: Convert to fraction form
    5,015.42/6,921.34 = 2,919.50/x
  3. Step 3: Cross multiply
    5,015.42x = 6,921.34 × 2,919.50
  4. Step 4: Simplify right side
    5,015.42x = 20,206,852.13
  5. Step 5: Solve for x
    x = 20,206,852.13/5,015.42
  6. Step 6: Final answer
    x = 4,028.95

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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.