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Finding the Fourth Proportional to 2,840.94, 4,260.78 and 892.86

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Solution

The fourth proportional to 2,840.94, 4,260.78 and 892.86 is: 1,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.94 : 4,260.78 = 892.86 : x
  2. Step 2: Convert to fraction form
    2,840.94/4,260.78 = 892.86/x
  3. Step 3: Cross multiply
    2,840.94x = 4,260.78 × 892.86
  4. Step 4: Simplify right side
    2,840.94x = 3,804,280.03
  5. Step 5: Solve for x
    x = 3,804,280.03/2,840.94
  6. Step 6: Final answer
    x = 1,339.09

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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.