Home / 2,784.62-4,176.21-1,320.86

Finding the Fourth Proportional to 2,784.62, 4,176.21 and 1,320.86

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Solution

The fourth proportional to 2,784.62, 4,176.21 and 1,320.86 is: 1,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.62 : 4,176.21 = 1,320.86 : x
  2. Step 2: Convert to fraction form
    2,784.62/4,176.21 = 1,320.86/x
  3. Step 3: Cross multiply
    2,784.62x = 4,176.21 × 1,320.86
  4. Step 4: Simplify right side
    2,784.62x = 5,516,188.74
  5. Step 5: Solve for x
    x = 5,516,188.74/2,784.62
  6. Step 6: Final answer
    x = 1,980.95

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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.