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Finding the Fourth Proportional to 7,863.30, 10,851.32 and 4,719.48

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Solution

The fourth proportional to 7,863.30, 10,851.32 and 4,719.48 is: 6,512.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.30 : 10,851.32 = 4,719.48 : x
  2. Step 2: Convert to fraction form
    7,863.30/10,851.32 = 4,719.48/x
  3. Step 3: Cross multiply
    7,863.30x = 10,851.32 × 4,719.48
  4. Step 4: Simplify right side
    7,863.30x = 51,212,564.12
  5. Step 5: Solve for x
    x = 51,212,564.12/7,863.30
  6. Step 6: Final answer
    x = 6,512.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.