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Finding the Fourth Proportional to 3,925.76, 5,889.70 and 1,293.76

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Solution

The fourth proportional to 3,925.76, 5,889.70 and 1,293.76 is: 1,940.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.76 : 5,889.70 = 1,293.76 : x
  2. Step 2: Convert to fraction form
    3,925.76/5,889.70 = 1,293.76/x
  3. Step 3: Cross multiply
    3,925.76x = 5,889.70 × 1,293.76
  4. Step 4: Simplify right side
    3,925.76x = 7,619,851.80
  5. Step 5: Solve for x
    x = 7,619,851.80/3,925.76
  6. Step 6: Final answer
    x = 1,940.99

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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.