Home / 5,015.36-6,921.98-2,861.91

Finding the Fourth Proportional to 5,015.36, 6,921.98 and 2,861.91

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Solution

The fourth proportional to 5,015.36, 6,921.98 and 2,861.91 is: 3,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.36 : 6,921.98 = 2,861.91 : x
  2. Step 2: Convert to fraction form
    5,015.36/6,921.98 = 2,861.91/x
  3. Step 3: Cross multiply
    5,015.36x = 6,921.98 × 2,861.91
  4. Step 4: Simplify right side
    5,015.36x = 19,810,069.47
  5. Step 5: Solve for x
    x = 19,810,069.47/5,015.36
  6. Step 6: Final answer
    x = 3,949.88

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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.