Home / 2,605.50-3,898.92-2,431.70

Finding the Fourth Proportional to 2,605.50, 3,898.92 and 2,431.70

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Solution

The fourth proportional to 2,605.50, 3,898.92 and 2,431.70 is: 3,638.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.50 : 3,898.92 = 2,431.70 : x
  2. Step 2: Convert to fraction form
    2,605.50/3,898.92 = 2,431.70/x
  3. Step 3: Cross multiply
    2,605.50x = 3,898.92 × 2,431.70
  4. Step 4: Simplify right side
    2,605.50x = 9,481,003.76
  5. Step 5: Solve for x
    x = 9,481,003.76/2,605.50
  6. Step 6: Final answer
    x = 3,638.84

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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.