Home / 3,571.40-4,928.67-1,978.25

Finding the Fourth Proportional to 3,571.40, 4,928.67 and 1,978.25

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Solution

The fourth proportional to 3,571.40, 4,928.67 and 1,978.25 is: 2,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.40 : 4,928.67 = 1,978.25 : x
  2. Step 2: Convert to fraction form
    3,571.40/4,928.67 = 1,978.25/x
  3. Step 3: Cross multiply
    3,571.40x = 4,928.67 × 1,978.25
  4. Step 4: Simplify right side
    3,571.40x = 9,750,141.43
  5. Step 5: Solve for x
    x = 9,750,141.43/3,571.40
  6. Step 6: Final answer
    x = 2,730.06

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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.