Home / 5,487.51-8,231.40-1,789.75

Finding the Fourth Proportional to 5,487.51, 8,231.40 and 1,789.75

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Solution

The fourth proportional to 5,487.51, 8,231.40 and 1,789.75 is: 2,684.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.51 : 8,231.40 = 1,789.75 : x
  2. Step 2: Convert to fraction form
    5,487.51/8,231.40 = 1,789.75/x
  3. Step 3: Cross multiply
    5,487.51x = 8,231.40 × 1,789.75
  4. Step 4: Simplify right side
    5,487.51x = 14,732,148.15
  5. Step 5: Solve for x
    x = 14,732,148.15/5,487.51
  6. Step 6: Final answer
    x = 2,684.67

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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.