Home / 2,825.12-3,898.96-1,630.16

Finding the Fourth Proportional to 2,825.12, 3,898.96 and 1,630.16

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Solution

The fourth proportional to 2,825.12, 3,898.96 and 1,630.16 is: 2,249.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.12 : 3,898.96 = 1,630.16 : x
  2. Step 2: Convert to fraction form
    2,825.12/3,898.96 = 1,630.16/x
  3. Step 3: Cross multiply
    2,825.12x = 3,898.96 × 1,630.16
  4. Step 4: Simplify right side
    2,825.12x = 6,355,928.63
  5. Step 5: Solve for x
    x = 6,355,928.63/2,825.12
  6. Step 6: Final answer
    x = 2,249.79

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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.