Home / 7,042.96-9,718.50-3,898.36

Finding the Fourth Proportional to 7,042.96, 9,718.50 and 3,898.36

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Solution

The fourth proportional to 7,042.96, 9,718.50 and 3,898.36 is: 5,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.96 : 9,718.50 = 3,898.36 : x
  2. Step 2: Convert to fraction form
    7,042.96/9,718.50 = 3,898.36/x
  3. Step 3: Cross multiply
    7,042.96x = 9,718.50 × 3,898.36
  4. Step 4: Simplify right side
    7,042.96x = 37,886,211.66
  5. Step 5: Solve for x
    x = 37,886,211.66/7,042.96
  6. Step 6: Final answer
    x = 5,379.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.