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Finding the Fourth Proportional to 3,889.48, 5,830.94 and 1,551.21

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Solution

The fourth proportional to 3,889.48, 5,830.94 and 1,551.21 is: 2,325.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.48 : 5,830.94 = 1,551.21 : x
  2. Step 2: Convert to fraction form
    3,889.48/5,830.94 = 1,551.21/x
  3. Step 3: Cross multiply
    3,889.48x = 5,830.94 × 1,551.21
  4. Step 4: Simplify right side
    3,889.48x = 9,045,012.44
  5. Step 5: Solve for x
    x = 9,045,012.44/3,889.48
  6. Step 6: Final answer
    x = 2,325.51

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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.