Home / 5,015.33-6,919.45-2,890.80

Finding the Fourth Proportional to 5,015.33, 6,919.45 and 2,890.80

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Solution

The fourth proportional to 5,015.33, 6,919.45 and 2,890.80 is: 3,988.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.33 : 6,919.45 = 2,890.80 : x
  2. Step 2: Convert to fraction form
    5,015.33/6,919.45 = 2,890.80/x
  3. Step 3: Cross multiply
    5,015.33x = 6,919.45 × 2,890.80
  4. Step 4: Simplify right side
    5,015.33x = 20,002,718.69
  5. Step 5: Solve for x
    x = 20,002,718.69/5,015.33
  6. Step 6: Final answer
    x = 3,988.31

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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.