Home / 2,457.21-3,390.80-1,394.85

Finding the Fourth Proportional to 2,457.21, 3,390.80 and 1,394.85

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Solution

The fourth proportional to 2,457.21, 3,390.80 and 1,394.85 is: 1,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.21 : 3,390.80 = 1,394.85 : x
  2. Step 2: Convert to fraction form
    2,457.21/3,390.80 = 1,394.85/x
  3. Step 3: Cross multiply
    2,457.21x = 3,390.80 × 1,394.85
  4. Step 4: Simplify right side
    2,457.21x = 4,729,650.41
  5. Step 5: Solve for x
    x = 4,729,650.41/2,457.21
  6. Step 6: Final answer
    x = 1,924.81

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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.