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Finding the Fourth Proportional to 5,407, 8,111.02 and 2,486.12

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Solution

The fourth proportional to 5,407, 8,111.02 and 2,486.12 is: 3,729.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407 : 8,111.02 = 2,486.12 : x
  2. Step 2: Convert to fraction form
    5,407/8,111.02 = 2,486.12/x
  3. Step 3: Cross multiply
    5,407x = 8,111.02 × 2,486.12
  4. Step 4: Simplify right side
    5,407x = 20,164,969.04
  5. Step 5: Solve for x
    x = 20,164,969.04/5,407
  6. Step 6: Final answer
    x = 3,729.42

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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.