Home / 9,142.47-13,718.97-3,877.07

Finding the Fourth Proportional to 9,142.47, 13,718.97 and 3,877.07

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Solution

The fourth proportional to 9,142.47, 13,718.97 and 3,877.07 is: 5,817.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.47 : 13,718.97 = 3,877.07 : x
  2. Step 2: Convert to fraction form
    9,142.47/13,718.97 = 3,877.07/x
  3. Step 3: Cross multiply
    9,142.47x = 13,718.97 × 3,877.07
  4. Step 4: Simplify right side
    9,142.47x = 53,189,338.42
  5. Step 5: Solve for x
    x = 53,189,338.42/9,142.47
  6. Step 6: Final answer
    x = 5,817.83

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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.