Home / 4,186.40-5,779.12-3,191.76

Finding the Fourth Proportional to 4,186.40, 5,779.12 and 3,191.76

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Solution

The fourth proportional to 4,186.40, 5,779.12 and 3,191.76 is: 4,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,186.40 : 5,779.12 = 3,191.76 : x
  2. Step 2: Convert to fraction form
    4,186.40/5,779.12 = 3,191.76/x
  3. Step 3: Cross multiply
    4,186.40x = 5,779.12 × 3,191.76
  4. Step 4: Simplify right side
    4,186.40x = 18,445,564.05
  5. Step 5: Solve for x
    x = 18,445,564.05/4,186.40
  6. Step 6: Final answer
    x = 4,406.07

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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.