Home / 3,880.93-5,355.64-2,112.52

Finding the Fourth Proportional to 3,880.93, 5,355.64 and 2,112.52

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Solution

The fourth proportional to 3,880.93, 5,355.64 and 2,112.52 is: 2,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.93 : 5,355.64 = 2,112.52 : x
  2. Step 2: Convert to fraction form
    3,880.93/5,355.64 = 2,112.52/x
  3. Step 3: Cross multiply
    3,880.93x = 5,355.64 × 2,112.52
  4. Step 4: Simplify right side
    3,880.93x = 11,313,896.61
  5. Step 5: Solve for x
    x = 11,313,896.61/3,880.93
  6. Step 6: Final answer
    x = 2,915.25

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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.