Home / 2,631.48-3,631.64-1,512.69

Finding the Fourth Proportional to 2,631.48, 3,631.64 and 1,512.69

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Solution

The fourth proportional to 2,631.48, 3,631.64 and 1,512.69 is: 2,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.48 : 3,631.64 = 1,512.69 : x
  2. Step 2: Convert to fraction form
    2,631.48/3,631.64 = 1,512.69/x
  3. Step 3: Cross multiply
    2,631.48x = 3,631.64 × 1,512.69
  4. Step 4: Simplify right side
    2,631.48x = 5,493,537.95
  5. Step 5: Solve for x
    x = 5,493,537.95/2,631.48
  6. Step 6: Final answer
    x = 2,087.62

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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.