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Finding the Fourth Proportional to 7,239.88, 10,853.42 and 3,133.64

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Solution

The fourth proportional to 7,239.88, 10,853.42 and 3,133.64 is: 4,697.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.88 : 10,853.42 = 3,133.64 : x
  2. Step 2: Convert to fraction form
    7,239.88/10,853.42 = 3,133.64/x
  3. Step 3: Cross multiply
    7,239.88x = 10,853.42 × 3,133.64
  4. Step 4: Simplify right side
    7,239.88x = 34,010,711.05
  5. Step 5: Solve for x
    x = 34,010,711.05/7,239.88
  6. Step 6: Final answer
    x = 4,697.69

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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.