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Finding the Fourth Proportional to 2,015.79, 3,024.04 and 920.26

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Solution

The fourth proportional to 2,015.79, 3,024.04 and 920.26 is: 1,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.79 : 3,024.04 = 920.26 : x
  2. Step 2: Convert to fraction form
    2,015.79/3,024.04 = 920.26/x
  3. Step 3: Cross multiply
    2,015.79x = 3,024.04 × 920.26
  4. Step 4: Simplify right side
    2,015.79x = 2,782,915.75
  5. Step 5: Solve for x
    x = 2,782,915.75/2,015.79
  6. Step 6: Final answer
    x = 1,380.56

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1.5x scale

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.