Home / 2,491.85-3,438.65-1,372.77

Finding the Fourth Proportional to 2,491.85, 3,438.65 and 1,372.77

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Solution

The fourth proportional to 2,491.85, 3,438.65 and 1,372.77 is: 1,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.85 : 3,438.65 = 1,372.77 : x
  2. Step 2: Convert to fraction form
    2,491.85/3,438.65 = 1,372.77/x
  3. Step 3: Cross multiply
    2,491.85x = 3,438.65 × 1,372.77
  4. Step 4: Simplify right side
    2,491.85x = 4,720,478.99
  5. Step 5: Solve for x
    x = 4,720,478.99/2,491.85
  6. Step 6: Final answer
    x = 1,894.37

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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.