Home / 7,619.90-11,431.28-3,460.21

Finding the Fourth Proportional to 7,619.90, 11,431.28 and 3,460.21

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Solution

The fourth proportional to 7,619.90, 11,431.28 and 3,460.21 is: 5,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.90 : 11,431.28 = 3,460.21 : x
  2. Step 2: Convert to fraction form
    7,619.90/11,431.28 = 3,460.21/x
  3. Step 3: Cross multiply
    7,619.90x = 11,431.28 × 3,460.21
  4. Step 4: Simplify right side
    7,619.90x = 39,554,629.37
  5. Step 5: Solve for x
    x = 39,554,629.37/7,619.90
  6. Step 6: Final answer
    x = 5,190.96

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1.5x scale

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.