Home / 3,651.39-5,478.30-1,186.29

Finding the Fourth Proportional to 3,651.39, 5,478.30 and 1,186.29

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Solution

The fourth proportional to 3,651.39, 5,478.30 and 1,186.29 is: 1,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.39 : 5,478.30 = 1,186.29 : x
  2. Step 2: Convert to fraction form
    3,651.39/5,478.30 = 1,186.29/x
  3. Step 3: Cross multiply
    3,651.39x = 5,478.30 × 1,186.29
  4. Step 4: Simplify right side
    3,651.39x = 6,498,852.51
  5. Step 5: Solve for x
    x = 6,498,852.51/3,651.39
  6. Step 6: Final answer
    x = 1,779.83

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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.