Home / 7,888.05-11,823.12-3,984.21

Finding the Fourth Proportional to 7,888.05, 11,823.12 and 3,984.21

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Solution

The fourth proportional to 7,888.05, 11,823.12 and 3,984.21 is: 5,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.05 : 11,823.12 = 3,984.21 : x
  2. Step 2: Convert to fraction form
    7,888.05/11,823.12 = 3,984.21/x
  3. Step 3: Cross multiply
    7,888.05x = 11,823.12 × 3,984.21
  4. Step 4: Simplify right side
    7,888.05x = 47,105,792.94
  5. Step 5: Solve for x
    x = 47,105,792.94/7,888.05
  6. Step 6: Final answer
    x = 5,971.79

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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.