Home / 2,491.90-3,438.42-1,443.76

Finding the Fourth Proportional to 2,491.90, 3,438.42 and 1,443.76

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Solution

The fourth proportional to 2,491.90, 3,438.42 and 1,443.76 is: 1,992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.90 : 3,438.42 = 1,443.76 : x
  2. Step 2: Convert to fraction form
    2,491.90/3,438.42 = 1,443.76/x
  3. Step 3: Cross multiply
    2,491.90x = 3,438.42 × 1,443.76
  4. Step 4: Simplify right side
    2,491.90x = 4,964,253.26
  5. Step 5: Solve for x
    x = 4,964,253.26/2,491.90
  6. Step 6: Final answer
    x = 1,992.16

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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.