Home / 7,923.78-11,880.86-3,970.44

Finding the Fourth Proportional to 7,923.78, 11,880.86 and 3,970.44

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Solution

The fourth proportional to 7,923.78, 11,880.86 and 3,970.44 is: 5,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.78 : 11,880.86 = 3,970.44 : x
  2. Step 2: Convert to fraction form
    7,923.78/11,880.86 = 3,970.44/x
  3. Step 3: Cross multiply
    7,923.78x = 11,880.86 × 3,970.44
  4. Step 4: Simplify right side
    7,923.78x = 47,172,241.78
  5. Step 5: Solve for x
    x = 47,172,241.78/7,923.78
  6. Step 6: Final answer
    x = 5,953.25

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1.5x scale

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.