Home / 3,109.44-4,639.80-2,782.56

Finding the Fourth Proportional to 3,109.44, 4,639.80 and 2,782.56

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Solution

The fourth proportional to 3,109.44, 4,639.80 and 2,782.56 is: 4,152.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.44 : 4,639.80 = 2,782.56 : x
  2. Step 2: Convert to fraction form
    3,109.44/4,639.80 = 2,782.56/x
  3. Step 3: Cross multiply
    3,109.44x = 4,639.80 × 2,782.56
  4. Step 4: Simplify right side
    3,109.44x = 12,910,521.89
  5. Step 5: Solve for x
    x = 12,910,521.89/3,109.44
  6. Step 6: Final answer
    x = 4,152.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.