Home / 7,868.45-11,802.56-3,188.42

Finding the Fourth Proportional to 7,868.45, 11,802.56 and 3,188.42

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Solution

The fourth proportional to 7,868.45, 11,802.56 and 3,188.42 is: 4,782.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.45 : 11,802.56 = 3,188.42 : x
  2. Step 2: Convert to fraction form
    7,868.45/11,802.56 = 3,188.42/x
  3. Step 3: Cross multiply
    7,868.45x = 11,802.56 × 3,188.42
  4. Step 4: Simplify right side
    7,868.45x = 37,631,518.36
  5. Step 5: Solve for x
    x = 37,631,518.36/7,868.45
  6. Step 6: Final answer
    x = 4,782.58

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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.