Home / 7,485.77-11,228.62-1,938.64

Finding the Fourth Proportional to 7,485.77, 11,228.62 and 1,938.64

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Solution

The fourth proportional to 7,485.77, 11,228.62 and 1,938.64 is: 2,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.77 : 11,228.62 = 1,938.64 : x
  2. Step 2: Convert to fraction form
    7,485.77/11,228.62 = 1,938.64/x
  3. Step 3: Cross multiply
    7,485.77x = 11,228.62 × 1,938.64
  4. Step 4: Simplify right side
    7,485.77x = 21,768,251.88
  5. Step 5: Solve for x
    x = 21,768,251.88/7,485.77
  6. Step 6: Final answer
    x = 2,907.95

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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.