Home / 7,868.63-11,802.97-3,188.72

Finding the Fourth Proportional to 7,868.63, 11,802.97 and 3,188.72

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Solution

The fourth proportional to 7,868.63, 11,802.97 and 3,188.72 is: 4,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.63 : 11,802.97 = 3,188.72 : x
  2. Step 2: Convert to fraction form
    7,868.63/11,802.97 = 3,188.72/x
  3. Step 3: Cross multiply
    7,868.63x = 11,802.97 × 3,188.72
  4. Step 4: Simplify right side
    7,868.63x = 37,636,350.55
  5. Step 5: Solve for x
    x = 37,636,350.55/7,868.63
  6. Step 6: Final answer
    x = 4,783.09

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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.