Home / 2,015.53-3,023.60-919.90

Finding the Fourth Proportional to 2,015.53, 3,023.60 and 919.90

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Solution

The fourth proportional to 2,015.53, 3,023.60 and 919.90 is: 1,379.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.53 : 3,023.60 = 919.90 : x
  2. Step 2: Convert to fraction form
    2,015.53/3,023.60 = 919.90/x
  3. Step 3: Cross multiply
    2,015.53x = 3,023.60 × 919.90
  4. Step 4: Simplify right side
    2,015.53x = 2,781,409.64
  5. Step 5: Solve for x
    x = 2,781,409.64/2,015.53
  6. Step 6: Final answer
    x = 1,379.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.