Home / 2,491.96-3,438.98-1,429.88

Finding the Fourth Proportional to 2,491.96, 3,438.98 and 1,429.88

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Solution

The fourth proportional to 2,491.96, 3,438.98 and 1,429.88 is: 1,973.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.96 : 3,438.98 = 1,429.88 : x
  2. Step 2: Convert to fraction form
    2,491.96/3,438.98 = 1,429.88/x
  3. Step 3: Cross multiply
    2,491.96x = 3,438.98 × 1,429.88
  4. Step 4: Simplify right side
    2,491.96x = 4,917,328.72
  5. Step 5: Solve for x
    x = 4,917,328.72/2,491.96
  6. Step 6: Final answer
    x = 1,973.28

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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.