Home / 3,186.51-4,779.74-1,239.17

Finding the Fourth Proportional to 3,186.51, 4,779.74 and 1,239.17

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Solution

The fourth proportional to 3,186.51, 4,779.74 and 1,239.17 is: 1,858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.51 : 4,779.74 = 1,239.17 : x
  2. Step 2: Convert to fraction form
    3,186.51/4,779.74 = 1,239.17/x
  3. Step 3: Cross multiply
    3,186.51x = 4,779.74 × 1,239.17
  4. Step 4: Simplify right side
    3,186.51x = 5,922,880.32
  5. Step 5: Solve for x
    x = 5,922,880.32/3,186.51
  6. Step 6: Final answer
    x = 1,858.74

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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.