Home / 6,977.76-9,628.27-3,993.02

Finding the Fourth Proportional to 6,977.76, 9,628.27 and 3,993.02

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Solution

The fourth proportional to 6,977.76, 9,628.27 and 3,993.02 is: 5,509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,977.76 : 9,628.27 = 3,993.02 : x
  2. Step 2: Convert to fraction form
    6,977.76/9,628.27 = 3,993.02/x
  3. Step 3: Cross multiply
    6,977.76x = 9,628.27 × 3,993.02
  4. Step 4: Simplify right side
    6,977.76x = 38,445,874.68
  5. Step 5: Solve for x
    x = 38,445,874.68/6,977.76
  6. Step 6: Final answer
    x = 5,509.77

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1.5x scale

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.