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Finding the Fourth Proportional to 2,866.64, 4,299.68 and 920.24

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Solution

The fourth proportional to 2,866.64, 4,299.68 and 920.24 is: 1,380.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.64 : 4,299.68 = 920.24 : x
  2. Step 2: Convert to fraction form
    2,866.64/4,299.68 = 920.24/x
  3. Step 3: Cross multiply
    2,866.64x = 4,299.68 × 920.24
  4. Step 4: Simplify right side
    2,866.64x = 3,956,737.52
  5. Step 5: Solve for x
    x = 3,956,737.52/2,866.64
  6. Step 6: Final answer
    x = 1,380.27

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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.