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Finding the Fourth Proportional to 7,213, 9,953.96 and 3,901

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Solution

The fourth proportional to 7,213, 9,953.96 and 3,901 is: 5,383.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213 : 9,953.96 = 3,901 : x
  2. Step 2: Convert to fraction form
    7,213/9,953.96 = 3,901/x
  3. Step 3: Cross multiply
    7,213x = 9,953.96 × 3,901
  4. Step 4: Simplify right side
    7,213x = 38,830,397.96
  5. Step 5: Solve for x
    x = 38,830,397.96/7,213
  6. Step 6: Final answer
    x = 5,383.39

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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.