Home / 3,431.90-5,146.30-1,091.46

Finding the Fourth Proportional to 3,431.90, 5,146.30 and 1,091.46

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Solution

The fourth proportional to 3,431.90, 5,146.30 and 1,091.46 is: 1,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.90 : 5,146.30 = 1,091.46 : x
  2. Step 2: Convert to fraction form
    3,431.90/5,146.30 = 1,091.46/x
  3. Step 3: Cross multiply
    3,431.90x = 5,146.30 × 1,091.46
  4. Step 4: Simplify right side
    3,431.90x = 5,616,980.60
  5. Step 5: Solve for x
    x = 5,616,980.60/3,431.90
  6. Step 6: Final answer
    x = 1,636.70

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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.