Home / 7,881.70-11,823.31-2,615.60

Finding the Fourth Proportional to 7,881.70, 11,823.31 and 2,615.60

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Solution

The fourth proportional to 7,881.70, 11,823.31 and 2,615.60 is: 3,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.70 : 11,823.31 = 2,615.60 : x
  2. Step 2: Convert to fraction form
    7,881.70/11,823.31 = 2,615.60/x
  3. Step 3: Cross multiply
    7,881.70x = 11,823.31 × 2,615.60
  4. Step 4: Simplify right side
    7,881.70x = 30,925,049.64
  5. Step 5: Solve for x
    x = 30,925,049.64/7,881.70
  6. Step 6: Final answer
    x = 3,923.65

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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.