Home / 3,400.85-5,101.74-1,209.05

Finding the Fourth Proportional to 3,400.85, 5,101.74 and 1,209.05

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Solution

The fourth proportional to 3,400.85, 5,101.74 and 1,209.05 is: 1,813.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.85 : 5,101.74 = 1,209.05 : x
  2. Step 2: Convert to fraction form
    3,400.85/5,101.74 = 1,209.05/x
  3. Step 3: Cross multiply
    3,400.85x = 5,101.74 × 1,209.05
  4. Step 4: Simplify right side
    3,400.85x = 6,168,258.75
  5. Step 5: Solve for x
    x = 6,168,258.75/3,400.85
  6. Step 6: Final answer
    x = 1,813.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.