Home / 7,911.30-11,868.75-4,211.58

Finding the Fourth Proportional to 7,911.30, 11,868.75 and 4,211.58

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Solution

The fourth proportional to 7,911.30, 11,868.75 and 4,211.58 is: 6,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.30 : 11,868.75 = 4,211.58 : x
  2. Step 2: Convert to fraction form
    7,911.30/11,868.75 = 4,211.58/x
  3. Step 3: Cross multiply
    7,911.30x = 11,868.75 × 4,211.58
  4. Step 4: Simplify right side
    7,911.30x = 49,986,109.72
  5. Step 5: Solve for x
    x = 49,986,109.72/7,911.30
  6. Step 6: Final answer
    x = 6,318.32

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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.