Home / 7,881.66-11,819.61-3,983.34

Finding the Fourth Proportional to 7,881.66, 11,819.61 and 3,983.34

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Solution

The fourth proportional to 7,881.66, 11,819.61 and 3,983.34 is: 5,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.66 : 11,819.61 = 3,983.34 : x
  2. Step 2: Convert to fraction form
    7,881.66/11,819.61 = 3,983.34/x
  3. Step 3: Cross multiply
    7,881.66x = 11,819.61 × 3,983.34
  4. Step 4: Simplify right side
    7,881.66x = 47,081,525.30
  5. Step 5: Solve for x
    x = 47,081,525.30/7,881.66
  6. Step 6: Final answer
    x = 5,973.55

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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.