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Finding the Fourth Proportional to 7,863.61, 10,851.86 and 4,326.90

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Solution

The fourth proportional to 7,863.61, 10,851.86 and 4,326.90 is: 5,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.61 : 10,851.86 = 4,326.90 : x
  2. Step 2: Convert to fraction form
    7,863.61/10,851.86 = 4,326.90/x
  3. Step 3: Cross multiply
    7,863.61x = 10,851.86 × 4,326.90
  4. Step 4: Simplify right side
    7,863.61x = 46,954,858.82
  5. Step 5: Solve for x
    x = 46,954,858.82/7,863.61
  6. Step 6: Final answer
    x = 5,971.16

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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.