Home / 5,389.63-8,081.48-2,100.02

Finding the Fourth Proportional to 5,389.63, 8,081.48 and 2,100.02

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Solution

The fourth proportional to 5,389.63, 8,081.48 and 2,100.02 is: 3,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.63 : 8,081.48 = 2,100.02 : x
  2. Step 2: Convert to fraction form
    5,389.63/8,081.48 = 2,100.02/x
  3. Step 3: Cross multiply
    5,389.63x = 8,081.48 × 2,100.02
  4. Step 4: Simplify right side
    5,389.63x = 16,971,234.47
  5. Step 5: Solve for x
    x = 16,971,234.47/5,389.63
  6. Step 6: Final answer
    x = 3,148.87

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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.