Home / 2,291.40-3,431.64-2,176.62

Finding the Fourth Proportional to 2,291.40, 3,431.64 and 2,176.62

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Solution

The fourth proportional to 2,291.40, 3,431.64 and 2,176.62 is: 3,259.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.40 : 3,431.64 = 2,176.62 : x
  2. Step 2: Convert to fraction form
    2,291.40/3,431.64 = 2,176.62/x
  3. Step 3: Cross multiply
    2,291.40x = 3,431.64 × 2,176.62
  4. Step 4: Simplify right side
    2,291.40x = 7,469,376.26
  5. Step 5: Solve for x
    x = 7,469,376.26/2,291.40
  6. Step 6: Final answer
    x = 3,259.74

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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.