Home / 2,074.40-3,112.20-1,984.64

Finding the Fourth Proportional to 2,074.40, 3,112.20 and 1,984.64

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Solution

The fourth proportional to 2,074.40, 3,112.20 and 1,984.64 is: 2,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.40 : 3,112.20 = 1,984.64 : x
  2. Step 2: Convert to fraction form
    2,074.40/3,112.20 = 1,984.64/x
  3. Step 3: Cross multiply
    2,074.40x = 3,112.20 × 1,984.64
  4. Step 4: Simplify right side
    2,074.40x = 6,176,596.61
  5. Step 5: Solve for x
    x = 6,176,596.61/2,074.40
  6. Step 6: Final answer
    x = 2,977.53

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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.