Home / 5,419.49-7,477.62-3,181.25

Finding the Fourth Proportional to 5,419.49, 7,477.62 and 3,181.25

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Solution

The fourth proportional to 5,419.49, 7,477.62 and 3,181.25 is: 4,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.49 : 7,477.62 = 3,181.25 : x
  2. Step 2: Convert to fraction form
    5,419.49/7,477.62 = 3,181.25/x
  3. Step 3: Cross multiply
    5,419.49x = 7,477.62 × 3,181.25
  4. Step 4: Simplify right side
    5,419.49x = 23,788,141.24
  5. Step 5: Solve for x
    x = 23,788,141.24/5,419.49
  6. Step 6: Final answer
    x = 4,389.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.