Home / 2,454.21-3,387.12-1,406.25

Finding the Fourth Proportional to 2,454.21, 3,387.12 and 1,406.25

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Solution

The fourth proportional to 2,454.21, 3,387.12 and 1,406.25 is: 1,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.21 : 3,387.12 = 1,406.25 : x
  2. Step 2: Convert to fraction form
    2,454.21/3,387.12 = 1,406.25/x
  3. Step 3: Cross multiply
    2,454.21x = 3,387.12 × 1,406.25
  4. Step 4: Simplify right side
    2,454.21x = 4,763,137.50
  5. Step 5: Solve for x
    x = 4,763,137.50/2,454.21
  6. Step 6: Final answer
    x = 1,940.80

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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.