Home / 2,456.50-3,390-1,408.60

Finding the Fourth Proportional to 2,456.50, 3,390 and 1,408.60

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Solution

The fourth proportional to 2,456.50, 3,390 and 1,408.60 is: 1,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,456.50 : 3,390 = 1,408.60 : x
  2. Step 2: Convert to fraction form
    2,456.50/3,390 = 1,408.60/x
  3. Step 3: Cross multiply
    2,456.50x = 3,390 × 1,408.60
  4. Step 4: Simplify right side
    2,456.50x = 4,775,154
  5. Step 5: Solve for x
    x = 4,775,154/2,456.50
  6. Step 6: Final answer
    x = 1,943.89

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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.