Home / 2,528.82-3,487.86-1,821.69

Finding the Fourth Proportional to 2,528.82, 3,487.86 and 1,821.69

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Solution

The fourth proportional to 2,528.82, 3,487.86 and 1,821.69 is: 2,512.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.82 : 3,487.86 = 1,821.69 : x
  2. Step 2: Convert to fraction form
    2,528.82/3,487.86 = 1,821.69/x
  3. Step 3: Cross multiply
    2,528.82x = 3,487.86 × 1,821.69
  4. Step 4: Simplify right side
    2,528.82x = 6,353,799.68
  5. Step 5: Solve for x
    x = 6,353,799.68/2,528.82
  6. Step 6: Final answer
    x = 2,512.56

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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.