Home / 3,090.38-4,629.76-1,528.57

Finding the Fourth Proportional to 3,090.38, 4,629.76 and 1,528.57

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Solution

The fourth proportional to 3,090.38, 4,629.76 and 1,528.57 is: 2,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.38 : 4,629.76 = 1,528.57 : x
  2. Step 2: Convert to fraction form
    3,090.38/4,629.76 = 1,528.57/x
  3. Step 3: Cross multiply
    3,090.38x = 4,629.76 × 1,528.57
  4. Step 4: Simplify right side
    3,090.38x = 7,076,912.24
  5. Step 5: Solve for x
    x = 7,076,912.24/3,090.38
  6. Step 6: Final answer
    x = 2,289.98

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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.