Home / 3,210.45-4,815.81-1,019.13

Finding the Fourth Proportional to 3,210.45, 4,815.81 and 1,019.13

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Solution

The fourth proportional to 3,210.45, 4,815.81 and 1,019.13 is: 1,528.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.45 : 4,815.81 = 1,019.13 : x
  2. Step 2: Convert to fraction form
    3,210.45/4,815.81 = 1,019.13/x
  3. Step 3: Cross multiply
    3,210.45x = 4,815.81 × 1,019.13
  4. Step 4: Simplify right side
    3,210.45x = 4,907,918.39
  5. Step 5: Solve for x
    x = 4,907,918.39/3,210.45
  6. Step 6: Final answer
    x = 1,528.73

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1.5x scale

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.