Home / 3,315.63-4,575.96-1,989.29

Finding the Fourth Proportional to 3,315.63, 4,575.96 and 1,989.29

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Solution

The fourth proportional to 3,315.63, 4,575.96 and 1,989.29 is: 2,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.63 : 4,575.96 = 1,989.29 : x
  2. Step 2: Convert to fraction form
    3,315.63/4,575.96 = 1,989.29/x
  3. Step 3: Cross multiply
    3,315.63x = 4,575.96 × 1,989.29
  4. Step 4: Simplify right side
    3,315.63x = 9,102,922.91
  5. Step 5: Solve for x
    x = 9,102,922.91/3,315.63
  6. Step 6: Final answer
    x = 2,745.45

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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.