Home / 3,186.18-4,779.45-1,238.22

Finding the Fourth Proportional to 3,186.18, 4,779.45 and 1,238.22

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Solution

The fourth proportional to 3,186.18, 4,779.45 and 1,238.22 is: 1,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.18 : 4,779.45 = 1,238.22 : x
  2. Step 2: Convert to fraction form
    3,186.18/4,779.45 = 1,238.22/x
  3. Step 3: Cross multiply
    3,186.18x = 4,779.45 × 1,238.22
  4. Step 4: Simplify right side
    3,186.18x = 5,918,010.58
  5. Step 5: Solve for x
    x = 5,918,010.58/3,186.18
  6. Step 6: Final answer
    x = 1,857.40

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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.