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Finding the Fourth Proportional to 2,491.89, 3,715.85 and 2,469.68

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Solution

The fourth proportional to 2,491.89, 3,715.85 and 2,469.68 is: 3,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.89 : 3,715.85 = 2,469.68 : x
  2. Step 2: Convert to fraction form
    2,491.89/3,715.85 = 2,469.68/x
  3. Step 3: Cross multiply
    2,491.89x = 3,715.85 × 2,469.68
  4. Step 4: Simplify right side
    2,491.89x = 9,176,929.50
  5. Step 5: Solve for x
    x = 9,176,929.50/2,491.89
  6. Step 6: Final answer
    x = 3,682.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.