Home / 2,491.86-3,438.75-1,372.77

Finding the Fourth Proportional to 2,491.86, 3,438.75 and 1,372.77

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Solution

The fourth proportional to 2,491.86, 3,438.75 and 1,372.77 is: 1,894.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.86 : 3,438.75 = 1,372.77 : x
  2. Step 2: Convert to fraction form
    2,491.86/3,438.75 = 1,372.77/x
  3. Step 3: Cross multiply
    2,491.86x = 3,438.75 × 1,372.77
  4. Step 4: Simplify right side
    2,491.86x = 4,720,612.84
  5. Step 5: Solve for x
    x = 4,720,612.84/2,491.86
  6. Step 6: Final answer
    x = 1,894.41

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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.