Home / 7,890.51-11,818.80-3,724.29

Finding the Fourth Proportional to 7,890.51, 11,818.80 and 3,724.29

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Solution

The fourth proportional to 7,890.51, 11,818.80 and 3,724.29 is: 5,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.51 : 11,818.80 = 3,724.29 : x
  2. Step 2: Convert to fraction form
    7,890.51/11,818.80 = 3,724.29/x
  3. Step 3: Cross multiply
    7,890.51x = 11,818.80 × 3,724.29
  4. Step 4: Simplify right side
    7,890.51x = 44,016,638.65
  5. Step 5: Solve for x
    x = 44,016,638.65/7,890.51
  6. Step 6: Final answer
    x = 5,578.43

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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.