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Finding the Fourth Proportional to 7,280.97, 10,921.47 and 2,015.99

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Solution

The fourth proportional to 7,280.97, 10,921.47 and 2,015.99 is: 3,023.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.97 : 10,921.47 = 2,015.99 : x
  2. Step 2: Convert to fraction form
    7,280.97/10,921.47 = 2,015.99/x
  3. Step 3: Cross multiply
    7,280.97x = 10,921.47 × 2,015.99
  4. Step 4: Simplify right side
    7,280.97x = 22,017,594.05
  5. Step 5: Solve for x
    x = 22,017,594.05/7,280.97
  6. Step 6: Final answer
    x = 3,023.99

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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.