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Finding the Fourth Proportional to 3,784.88, 5,670.90 and 2,683.76

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Solution

The fourth proportional to 3,784.88, 5,670.90 and 2,683.76 is: 4,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.88 : 5,670.90 = 2,683.76 : x
  2. Step 2: Convert to fraction form
    3,784.88/5,670.90 = 2,683.76/x
  3. Step 3: Cross multiply
    3,784.88x = 5,670.90 × 2,683.76
  4. Step 4: Simplify right side
    3,784.88x = 15,219,334.58
  5. Step 5: Solve for x
    x = 15,219,334.58/3,784.88
  6. Step 6: Final answer
    x = 4,021.09

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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.