Home / 7,805.21-11,705.67-3,641.09

Finding the Fourth Proportional to 7,805.21, 11,705.67 and 3,641.09

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Solution

The fourth proportional to 7,805.21, 11,705.67 and 3,641.09 is: 5,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.21 : 11,705.67 = 3,641.09 : x
  2. Step 2: Convert to fraction form
    7,805.21/11,705.67 = 3,641.09/x
  3. Step 3: Cross multiply
    7,805.21x = 11,705.67 × 3,641.09
  4. Step 4: Simplify right side
    7,805.21x = 42,621,339.45
  5. Step 5: Solve for x
    x = 42,621,339.45/7,805.21
  6. Step 6: Final answer
    x = 5,460.63

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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.