Home / 9,090.60-13,623.20-4,921.60

Finding the Fourth Proportional to 9,090.60, 13,623.20 and 4,921.60

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Solution

The fourth proportional to 9,090.60, 13,623.20 and 4,921.60 is: 7,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.60 : 13,623.20 = 4,921.60 : x
  2. Step 2: Convert to fraction form
    9,090.60/13,623.20 = 4,921.60/x
  3. Step 3: Cross multiply
    9,090.60x = 13,623.20 × 4,921.60
  4. Step 4: Simplify right side
    9,090.60x = 67,047,941.12
  5. Step 5: Solve for x
    x = 67,047,941.12/9,090.60
  6. Step 6: Final answer
    x = 7,375.52

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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.