Home / 5,015.24-6,921.40-2,777.20

Finding the Fourth Proportional to 5,015.24, 6,921.40 and 2,777.20

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Solution

The fourth proportional to 5,015.24, 6,921.40 and 2,777.20 is: 3,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.24 : 6,921.40 = 2,777.20 : x
  2. Step 2: Convert to fraction form
    5,015.24/6,921.40 = 2,777.20/x
  3. Step 3: Cross multiply
    5,015.24x = 6,921.40 × 2,777.20
  4. Step 4: Simplify right side
    5,015.24x = 19,222,112.08
  5. Step 5: Solve for x
    x = 19,222,112.08/5,015.24
  6. Step 6: Final answer
    x = 3,832.74

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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.