Home / 7,850.12-11,775.56-2,918.60

Finding the Fourth Proportional to 7,850.12, 11,775.56 and 2,918.60

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Solution

The fourth proportional to 7,850.12, 11,775.56 and 2,918.60 is: 4,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850.12 : 11,775.56 = 2,918.60 : x
  2. Step 2: Convert to fraction form
    7,850.12/11,775.56 = 2,918.60/x
  3. Step 3: Cross multiply
    7,850.12x = 11,775.56 × 2,918.60
  4. Step 4: Simplify right side
    7,850.12x = 34,368,164.26
  5. Step 5: Solve for x
    x = 34,368,164.26/7,850.12
  6. Step 6: Final answer
    x = 4,378.05

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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.