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Finding the Fourth Proportional to 7,862.95, 10,850.79 and 4,278.02

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Solution

The fourth proportional to 7,862.95, 10,850.79 and 4,278.02 is: 5,903.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.95 : 10,850.79 = 4,278.02 : x
  2. Step 2: Convert to fraction form
    7,862.95/10,850.79 = 4,278.02/x
  3. Step 3: Cross multiply
    7,862.95x = 10,850.79 × 4,278.02
  4. Step 4: Simplify right side
    7,862.95x = 46,419,822.33
  5. Step 5: Solve for x
    x = 46,419,822.33/7,862.95
  6. Step 6: Final answer
    x = 5,903.62

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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.