Home / 3,315.53-4,575.99-1,989.36

Finding the Fourth Proportional to 3,315.53, 4,575.99 and 1,989.36

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Solution

The fourth proportional to 3,315.53, 4,575.99 and 1,989.36 is: 2,745.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.53 : 4,575.99 = 1,989.36 : x
  2. Step 2: Convert to fraction form
    3,315.53/4,575.99 = 1,989.36/x
  3. Step 3: Cross multiply
    3,315.53x = 4,575.99 × 1,989.36
  4. Step 4: Simplify right side
    3,315.53x = 9,103,298.93
  5. Step 5: Solve for x
    x = 9,103,298.93/3,315.53
  6. Step 6: Final answer
    x = 2,745.65

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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.