Home / 3,493.53-4,821.21-1,921.68

Finding the Fourth Proportional to 3,493.53, 4,821.21 and 1,921.68

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Solution

The fourth proportional to 3,493.53, 4,821.21 and 1,921.68 is: 2,651.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.53 : 4,821.21 = 1,921.68 : x
  2. Step 2: Convert to fraction form
    3,493.53/4,821.21 = 1,921.68/x
  3. Step 3: Cross multiply
    3,493.53x = 4,821.21 × 1,921.68
  4. Step 4: Simplify right side
    3,493.53x = 9,264,822.83
  5. Step 5: Solve for x
    x = 9,264,822.83/3,493.53
  6. Step 6: Final answer
    x = 2,651.99

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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.