Home / 4,155.12-6,230.68-1,520.80

Finding the Fourth Proportional to 4,155.12, 6,230.68 and 1,520.80

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Solution

The fourth proportional to 4,155.12, 6,230.68 and 1,520.80 is: 2,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,155.12 : 6,230.68 = 1,520.80 : x
  2. Step 2: Convert to fraction form
    4,155.12/6,230.68 = 1,520.80/x
  3. Step 3: Cross multiply
    4,155.12x = 6,230.68 × 1,520.80
  4. Step 4: Simplify right side
    4,155.12x = 9,475,618.14
  5. Step 5: Solve for x
    x = 9,475,618.14/4,155.12
  6. Step 6: Final answer
    x = 2,280.47

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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.