Home / 7,905.89-11,855.36-4,207.25

Finding the Fourth Proportional to 7,905.89, 11,855.36 and 4,207.25

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Solution

The fourth proportional to 7,905.89, 11,855.36 and 4,207.25 is: 6,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.89 : 11,855.36 = 4,207.25 : x
  2. Step 2: Convert to fraction form
    7,905.89/11,855.36 = 4,207.25/x
  3. Step 3: Cross multiply
    7,905.89x = 11,855.36 × 4,207.25
  4. Step 4: Simplify right side
    7,905.89x = 49,878,383.05
  5. Step 5: Solve for x
    x = 49,878,383.05/7,905.89
  6. Step 6: Final answer
    x = 6,309.02

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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.