Home / 4,090.79-5,642.10-2,745.96

Finding the Fourth Proportional to 4,090.79, 5,642.10 and 2,745.96

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Solution

The fourth proportional to 4,090.79, 5,642.10 and 2,745.96 is: 3,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.79 : 5,642.10 = 2,745.96 : x
  2. Step 2: Convert to fraction form
    4,090.79/5,642.10 = 2,745.96/x
  3. Step 3: Cross multiply
    4,090.79x = 5,642.10 × 2,745.96
  4. Step 4: Simplify right side
    4,090.79x = 15,492,980.92
  5. Step 5: Solve for x
    x = 15,492,980.92/4,090.79
  6. Step 6: Final answer
    x = 3,787.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.