Home / 6,890.70-9,508.89-3,907.16

Finding the Fourth Proportional to 6,890.70, 9,508.89 and 3,907.16

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Solution

The fourth proportional to 6,890.70, 9,508.89 and 3,907.16 is: 5,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.70 : 9,508.89 = 3,907.16 : x
  2. Step 2: Convert to fraction form
    6,890.70/9,508.89 = 3,907.16/x
  3. Step 3: Cross multiply
    6,890.70x = 9,508.89 × 3,907.16
  4. Step 4: Simplify right side
    6,890.70x = 37,152,707.11
  5. Step 5: Solve for x
    x = 37,152,707.11/6,890.70
  6. Step 6: Final answer
    x = 5,391.72

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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.