Home / 3,216.80-4,438.68-1,819.28

Finding the Fourth Proportional to 3,216.80, 4,438.68 and 1,819.28

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Solution

The fourth proportional to 3,216.80, 4,438.68 and 1,819.28 is: 2,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.80 : 4,438.68 = 1,819.28 : x
  2. Step 2: Convert to fraction form
    3,216.80/4,438.68 = 1,819.28/x
  3. Step 3: Cross multiply
    3,216.80x = 4,438.68 × 1,819.28
  4. Step 4: Simplify right side
    3,216.80x = 8,075,201.75
  5. Step 5: Solve for x
    x = 8,075,201.75/3,216.80
  6. Step 6: Final answer
    x = 2,510.32

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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.