Home / 5,015.78-6,921.48-2,777.53

Finding the Fourth Proportional to 5,015.78, 6,921.48 and 2,777.53

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Solution

The fourth proportional to 5,015.78, 6,921.48 and 2,777.53 is: 3,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.78 : 6,921.48 = 2,777.53 : x
  2. Step 2: Convert to fraction form
    5,015.78/6,921.48 = 2,777.53/x
  3. Step 3: Cross multiply
    5,015.78x = 6,921.48 × 2,777.53
  4. Step 4: Simplify right side
    5,015.78x = 19,224,618.34
  5. Step 5: Solve for x
    x = 19,224,618.34/5,015.78
  6. Step 6: Final answer
    x = 3,832.83

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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.