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Finding the Fourth Proportional to 3,889.74, 5,835.19 and 1,256.37

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Solution

The fourth proportional to 3,889.74, 5,835.19 and 1,256.37 is: 1,884.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.74 : 5,835.19 = 1,256.37 : x
  2. Step 2: Convert to fraction form
    3,889.74/5,835.19 = 1,256.37/x
  3. Step 3: Cross multiply
    3,889.74x = 5,835.19 × 1,256.37
  4. Step 4: Simplify right side
    3,889.74x = 7,331,154.52
  5. Step 5: Solve for x
    x = 7,331,154.52/3,889.74
  6. Step 6: Final answer
    x = 1,884.74

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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.