Home / 3,631.30-5,445.15-1,290.96

Finding the Fourth Proportional to 3,631.30, 5,445.15 and 1,290.96

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Solution

The fourth proportional to 3,631.30, 5,445.15 and 1,290.96 is: 1,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.30 : 5,445.15 = 1,290.96 : x
  2. Step 2: Convert to fraction form
    3,631.30/5,445.15 = 1,290.96/x
  3. Step 3: Cross multiply
    3,631.30x = 5,445.15 × 1,290.96
  4. Step 4: Simplify right side
    3,631.30x = 7,029,450.16
  5. Step 5: Solve for x
    x = 7,029,450.16/3,631.30
  6. Step 6: Final answer
    x = 1,935.79

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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.