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Finding the Fourth Proportional to 2,015.80, 3,023.53 and 920.08

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Solution

The fourth proportional to 2,015.80, 3,023.53 and 920.08 is: 1,380.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.80 : 3,023.53 = 920.08 : x
  2. Step 2: Convert to fraction form
    2,015.80/3,023.53 = 920.08/x
  3. Step 3: Cross multiply
    2,015.80x = 3,023.53 × 920.08
  4. Step 4: Simplify right side
    2,015.80x = 2,781,880.33
  5. Step 5: Solve for x
    x = 2,781,880.33/2,015.80
  6. Step 6: Final answer
    x = 1,380.04

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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.