Home / 3,156.78-4,729.56-1,923.60

Finding the Fourth Proportional to 3,156.78, 4,729.56 and 1,923.60

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Solution

The fourth proportional to 3,156.78, 4,729.56 and 1,923.60 is: 2,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.78 : 4,729.56 = 1,923.60 : x
  2. Step 2: Convert to fraction form
    3,156.78/4,729.56 = 1,923.60/x
  3. Step 3: Cross multiply
    3,156.78x = 4,729.56 × 1,923.60
  4. Step 4: Simplify right side
    3,156.78x = 9,097,781.62
  5. Step 5: Solve for x
    x = 9,097,781.62/3,156.78
  6. Step 6: Final answer
    x = 2,881.98

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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.