Home / 7,912.87-11,878.47-4,628.32

Finding the Fourth Proportional to 7,912.87, 11,878.47 and 4,628.32

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Solution

The fourth proportional to 7,912.87, 11,878.47 and 4,628.32 is: 6,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.87 : 11,878.47 = 4,628.32 : x
  2. Step 2: Convert to fraction form
    7,912.87/11,878.47 = 4,628.32/x
  3. Step 3: Cross multiply
    7,912.87x = 11,878.47 × 4,628.32
  4. Step 4: Simplify right side
    7,912.87x = 54,977,360.27
  5. Step 5: Solve for x
    x = 54,977,360.27/7,912.87
  6. Step 6: Final answer
    x = 6,947.84

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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.