Home / 7,779.72-11,669.48-1,936.38

Finding the Fourth Proportional to 7,779.72, 11,669.48 and 1,936.38

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Solution

The fourth proportional to 7,779.72, 11,669.48 and 1,936.38 is: 2,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.72 : 11,669.48 = 1,936.38 : x
  2. Step 2: Convert to fraction form
    7,779.72/11,669.48 = 1,936.38/x
  3. Step 3: Cross multiply
    7,779.72x = 11,669.48 × 1,936.38
  4. Step 4: Simplify right side
    7,779.72x = 22,596,547.68
  5. Step 5: Solve for x
    x = 22,596,547.68/7,779.72
  6. Step 6: Final answer
    x = 2,904.55

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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.