Home / 2,880.50-3,975.81-1,639.22

Finding the Fourth Proportional to 2,880.50, 3,975.81 and 1,639.22

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Solution

The fourth proportional to 2,880.50, 3,975.81 and 1,639.22 is: 2,262.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.50 : 3,975.81 = 1,639.22 : x
  2. Step 2: Convert to fraction form
    2,880.50/3,975.81 = 1,639.22/x
  3. Step 3: Cross multiply
    2,880.50x = 3,975.81 × 1,639.22
  4. Step 4: Simplify right side
    2,880.50x = 6,517,227.27
  5. Step 5: Solve for x
    x = 6,517,227.27/2,880.50
  6. Step 6: Final answer
    x = 2,262.53

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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.