Home / 2,504.25-3,455.81-1,385.20

Finding the Fourth Proportional to 2,504.25, 3,455.81 and 1,385.20

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Solution

The fourth proportional to 2,504.25, 3,455.81 and 1,385.20 is: 1,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,504.25 : 3,455.81 = 1,385.20 : x
  2. Step 2: Convert to fraction form
    2,504.25/3,455.81 = 1,385.20/x
  3. Step 3: Cross multiply
    2,504.25x = 3,455.81 × 1,385.20
  4. Step 4: Simplify right side
    2,504.25x = 4,786,990.60
  5. Step 5: Solve for x
    x = 4,786,990.60/2,504.25
  6. Step 6: Final answer
    x = 1,911.55

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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.