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Finding the Fourth Proportional to 2,674.60, 3,690.90 and 1,540.46

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Solution

The fourth proportional to 2,674.60, 3,690.90 and 1,540.46 is: 2,125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.60 : 3,690.90 = 1,540.46 : x
  2. Step 2: Convert to fraction form
    2,674.60/3,690.90 = 1,540.46/x
  3. Step 3: Cross multiply
    2,674.60x = 3,690.90 × 1,540.46
  4. Step 4: Simplify right side
    2,674.60x = 5,685,693.04
  5. Step 5: Solve for x
    x = 5,685,693.04/2,674.60
  6. Step 6: Final answer
    x = 2,125.81

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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.