Home / 7,977.48-11,993.25-6,428.36

Finding the Fourth Proportional to 7,977.48, 11,993.25 and 6,428.36

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Solution

The fourth proportional to 7,977.48, 11,993.25 and 6,428.36 is: 9,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.48 : 11,993.25 = 6,428.36 : x
  2. Step 2: Convert to fraction form
    7,977.48/11,993.25 = 6,428.36/x
  3. Step 3: Cross multiply
    7,977.48x = 11,993.25 × 6,428.36
  4. Step 4: Simplify right side
    7,977.48x = 77,096,928.57
  5. Step 5: Solve for x
    x = 77,096,928.57/7,977.48
  6. Step 6: Final answer
    x = 9,664.32

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1.5x scale

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.