Home / 3,835.86-5,291.70-2,491.37

Finding the Fourth Proportional to 3,835.86, 5,291.70 and 2,491.37

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Solution

The fourth proportional to 3,835.86, 5,291.70 and 2,491.37 is: 3,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.86 : 5,291.70 = 2,491.37 : x
  2. Step 2: Convert to fraction form
    3,835.86/5,291.70 = 2,491.37/x
  3. Step 3: Cross multiply
    3,835.86x = 5,291.70 × 2,491.37
  4. Step 4: Simplify right side
    3,835.86x = 13,183,581.55
  5. Step 5: Solve for x
    x = 13,183,581.55/3,835.86
  6. Step 6: Final answer
    x = 3,436.93

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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.