Home / 7,056.72-9,738-3,912.84

Finding the Fourth Proportional to 7,056.72, 9,738 and 3,912.84

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Solution

The fourth proportional to 7,056.72, 9,738 and 3,912.84 is: 5,399.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,056.72 : 9,738 = 3,912.84 : x
  2. Step 2: Convert to fraction form
    7,056.72/9,738 = 3,912.84/x
  3. Step 3: Cross multiply
    7,056.72x = 9,738 × 3,912.84
  4. Step 4: Simplify right side
    7,056.72x = 38,103,235.92
  5. Step 5: Solve for x
    x = 38,103,235.92/7,056.72
  6. Step 6: Final answer
    x = 5,399.57

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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.