Home / 4,090.79-6,128.74-3,938.92

Finding the Fourth Proportional to 4,090.79, 6,128.74 and 3,938.92

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Solution

The fourth proportional to 4,090.79, 6,128.74 and 3,938.92 is: 5,901.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.79 : 6,128.74 = 3,938.92 : x
  2. Step 2: Convert to fraction form
    4,090.79/6,128.74 = 3,938.92/x
  3. Step 3: Cross multiply
    4,090.79x = 6,128.74 × 3,938.92
  4. Step 4: Simplify right side
    4,090.79x = 24,140,616.56
  5. Step 5: Solve for x
    x = 24,140,616.56/4,090.79
  6. Step 6: Final answer
    x = 5,901.21

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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.