Home / 7,912.49-11,870.04-3,529.78

Finding the Fourth Proportional to 7,912.49, 11,870.04 and 3,529.78

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Solution

The fourth proportional to 7,912.49, 11,870.04 and 3,529.78 is: 5,295.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.49 : 11,870.04 = 3,529.78 : x
  2. Step 2: Convert to fraction form
    7,912.49/11,870.04 = 3,529.78/x
  3. Step 3: Cross multiply
    7,912.49x = 11,870.04 × 3,529.78
  4. Step 4: Simplify right side
    7,912.49x = 41,898,613.35
  5. Step 5: Solve for x
    x = 41,898,613.35/7,912.49
  6. Step 6: Final answer
    x = 5,295.25

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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.