Home / 2,431.20-3,353.79-1,840.71

Finding the Fourth Proportional to 2,431.20, 3,353.79 and 1,840.71

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Solution

The fourth proportional to 2,431.20, 3,353.79 and 1,840.71 is: 2,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.20 : 3,353.79 = 1,840.71 : x
  2. Step 2: Convert to fraction form
    2,431.20/3,353.79 = 1,840.71/x
  3. Step 3: Cross multiply
    2,431.20x = 3,353.79 × 1,840.71
  4. Step 4: Simplify right side
    2,431.20x = 6,173,354.79
  5. Step 5: Solve for x
    x = 6,173,354.79/2,431.20
  6. Step 6: Final answer
    x = 2,539.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.