Home / 3,493.40-4,820.87-1,921.49

Finding the Fourth Proportional to 3,493.40, 4,820.87 and 1,921.49

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Solution

The fourth proportional to 3,493.40, 4,820.87 and 1,921.49 is: 2,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.40 : 4,820.87 = 1,921.49 : x
  2. Step 2: Convert to fraction form
    3,493.40/4,820.87 = 1,921.49/x
  3. Step 3: Cross multiply
    3,493.40x = 4,820.87 × 1,921.49
  4. Step 4: Simplify right side
    3,493.40x = 9,263,243.89
  5. Step 5: Solve for x
    x = 9,263,243.89/3,493.40
  6. Step 6: Final answer
    x = 2,651.64

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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.