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Finding the Fourth Proportional to 7,873.36, 11,811.48 and 3,256.72

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Solution

The fourth proportional to 7,873.36, 11,811.48 and 3,256.72 is: 4,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.36 : 11,811.48 = 3,256.72 : x
  2. Step 2: Convert to fraction form
    7,873.36/11,811.48 = 3,256.72/x
  3. Step 3: Cross multiply
    7,873.36x = 11,811.48 × 3,256.72
  4. Step 4: Simplify right side
    7,873.36x = 38,466,683.15
  5. Step 5: Solve for x
    x = 38,466,683.15/7,873.36
  6. Step 6: Final answer
    x = 4,885.68

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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.