Home / 3,216-4,824.96-1,485.76

Finding the Fourth Proportional to 3,216, 4,824.96 and 1,485.76

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Solution

The fourth proportional to 3,216, 4,824.96 and 1,485.76 is: 2,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216 : 4,824.96 = 1,485.76 : x
  2. Step 2: Convert to fraction form
    3,216/4,824.96 = 1,485.76/x
  3. Step 3: Cross multiply
    3,216x = 4,824.96 × 1,485.76
  4. Step 4: Simplify right side
    3,216x = 7,168,732.57
  5. Step 5: Solve for x
    x = 7,168,732.57/3,216
  6. Step 6: Final answer
    x = 2,229.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.