Home / 2,840.30-4,260.15-892.40

Finding the Fourth Proportional to 2,840.30, 4,260.15 and 892.40

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Solution

The fourth proportional to 2,840.30, 4,260.15 and 892.40 is: 1,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.30 : 4,260.15 = 892.40 : x
  2. Step 2: Convert to fraction form
    2,840.30/4,260.15 = 892.40/x
  3. Step 3: Cross multiply
    2,840.30x = 4,260.15 × 892.40
  4. Step 4: Simplify right side
    2,840.30x = 3,801,757.86
  5. Step 5: Solve for x
    x = 3,801,757.86/2,840.30
  6. Step 6: Final answer
    x = 1,338.51

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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.