Home / 8,970.35-12,379.33-4,991.37

Finding the Fourth Proportional to 8,970.35, 12,379.33 and 4,991.37

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Solution

The fourth proportional to 8,970.35, 12,379.33 and 4,991.37 is: 6,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.35 : 12,379.33 = 4,991.37 : x
  2. Step 2: Convert to fraction form
    8,970.35/12,379.33 = 4,991.37/x
  3. Step 3: Cross multiply
    8,970.35x = 12,379.33 × 4,991.37
  4. Step 4: Simplify right side
    8,970.35x = 61,789,845.83
  5. Step 5: Solve for x
    x = 61,789,845.83/8,970.35
  6. Step 6: Final answer
    x = 6,888.24

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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.