Home / 4,271.40-6,406.19-1,638.02

Finding the Fourth Proportional to 4,271.40, 6,406.19 and 1,638.02

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Solution

The fourth proportional to 4,271.40, 6,406.19 and 1,638.02 is: 2,456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,271.40 : 6,406.19 = 1,638.02 : x
  2. Step 2: Convert to fraction form
    4,271.40/6,406.19 = 1,638.02/x
  3. Step 3: Cross multiply
    4,271.40x = 6,406.19 × 1,638.02
  4. Step 4: Simplify right side
    4,271.40x = 10,493,481.31
  5. Step 5: Solve for x
    x = 10,493,481.31/4,271.40
  6. Step 6: Final answer
    x = 2,456.68

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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.