Home / 5,438.57-8,158.40-1,739.87

Finding the Fourth Proportional to 5,438.57, 8,158.40 and 1,739.87

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Solution

The fourth proportional to 5,438.57, 8,158.40 and 1,739.87 is: 2,609.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.57 : 8,158.40 = 1,739.87 : x
  2. Step 2: Convert to fraction form
    5,438.57/8,158.40 = 1,739.87/x
  3. Step 3: Cross multiply
    5,438.57x = 8,158.40 × 1,739.87
  4. Step 4: Simplify right side
    5,438.57x = 14,194,546.71
  5. Step 5: Solve for x
    x = 14,194,546.71/5,438.57
  6. Step 6: Final answer
    x = 2,609.98

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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.