Home / 4,914-7,381.17-3,978.05

Finding the Fourth Proportional to 4,914, 7,381.17 and 3,978.05

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Solution

The fourth proportional to 4,914, 7,381.17 and 3,978.05 is: 5,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914 : 7,381.17 = 3,978.05 : x
  2. Step 2: Convert to fraction form
    4,914/7,381.17 = 3,978.05/x
  3. Step 3: Cross multiply
    4,914x = 7,381.17 × 3,978.05
  4. Step 4: Simplify right side
    4,914x = 29,362,663.32
  5. Step 5: Solve for x
    x = 29,362,663.32/4,914
  6. Step 6: Final answer
    x = 5,975.31

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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.