Home / 3,210.48-4,815-1,912.32

Finding the Fourth Proportional to 3,210.48, 4,815 and 1,912.32

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Solution

The fourth proportional to 3,210.48, 4,815 and 1,912.32 is: 2,868.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.48 : 4,815 = 1,912.32 : x
  2. Step 2: Convert to fraction form
    3,210.48/4,815 = 1,912.32/x
  3. Step 3: Cross multiply
    3,210.48x = 4,815 × 1,912.32
  4. Step 4: Simplify right side
    3,210.48x = 9,207,820.80
  5. Step 5: Solve for x
    x = 9,207,820.80/3,210.48
  6. Step 6: Final answer
    x = 2,868.05

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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.