Home / 7,107.20-9,811.94-4,928.30

Finding the Fourth Proportional to 7,107.20, 9,811.94 and 4,928.30

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Solution

The fourth proportional to 7,107.20, 9,811.94 and 4,928.30 is: 6,803.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.20 : 9,811.94 = 4,928.30 : x
  2. Step 2: Convert to fraction form
    7,107.20/9,811.94 = 4,928.30/x
  3. Step 3: Cross multiply
    7,107.20x = 9,811.94 × 4,928.30
  4. Step 4: Simplify right side
    7,107.20x = 48,356,134.84
  5. Step 5: Solve for x
    x = 48,356,134.84/7,107.20
  6. Step 6: Final answer
    x = 6,803.83

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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.