Home / 2,770.21-3,822.89-1,528.21

Finding the Fourth Proportional to 2,770.21, 3,822.89 and 1,528.21

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Solution

The fourth proportional to 2,770.21, 3,822.89 and 1,528.21 is: 2,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.21 : 3,822.89 = 1,528.21 : x
  2. Step 2: Convert to fraction form
    2,770.21/3,822.89 = 1,528.21/x
  3. Step 3: Cross multiply
    2,770.21x = 3,822.89 × 1,528.21
  4. Step 4: Simplify right side
    2,770.21x = 5,842,178.73
  5. Step 5: Solve for x
    x = 5,842,178.73/2,770.21
  6. Step 6: Final answer
    x = 2,108.93

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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.