Home / 4,189.78-5,779.56-2,674.48

Finding the Fourth Proportional to 4,189.78, 5,779.56 and 2,674.48

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Solution

The fourth proportional to 4,189.78, 5,779.56 and 2,674.48 is: 3,689.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.78 : 5,779.56 = 2,674.48 : x
  2. Step 2: Convert to fraction form
    4,189.78/5,779.56 = 2,674.48/x
  3. Step 3: Cross multiply
    4,189.78x = 5,779.56 × 2,674.48
  4. Step 4: Simplify right side
    4,189.78x = 15,457,317.63
  5. Step 5: Solve for x
    x = 15,457,317.63/4,189.78
  6. Step 6: Final answer
    x = 3,689.29

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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.