Home / 5,190-7,815.78-4,676.05

Finding the Fourth Proportional to 5,190, 7,815.78 and 4,676.05

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Solution

The fourth proportional to 5,190, 7,815.78 and 4,676.05 is: 7,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190 : 7,815.78 = 4,676.05 : x
  2. Step 2: Convert to fraction form
    5,190/7,815.78 = 4,676.05/x
  3. Step 3: Cross multiply
    5,190x = 7,815.78 × 4,676.05
  4. Step 4: Simplify right side
    5,190x = 36,546,978.07
  5. Step 5: Solve for x
    x = 36,546,978.07/5,190
  6. Step 6: Final answer
    x = 7,041.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.