Home / 3,928.77-5,422.55-2,250.45

Finding the Fourth Proportional to 3,928.77, 5,422.55 and 2,250.45

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Solution

The fourth proportional to 3,928.77, 5,422.55 and 2,250.45 is: 3,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.77 : 5,422.55 = 2,250.45 : x
  2. Step 2: Convert to fraction form
    3,928.77/5,422.55 = 2,250.45/x
  3. Step 3: Cross multiply
    3,928.77x = 5,422.55 × 2,250.45
  4. Step 4: Simplify right side
    3,928.77x = 12,203,166.40
  5. Step 5: Solve for x
    x = 12,203,166.40/3,928.77
  6. Step 6: Final answer
    x = 3,106.10

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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.