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Finding the Fourth Proportional to 7,905.19, 10,910.49 and 5,351.79

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Solution

The fourth proportional to 7,905.19, 10,910.49 and 5,351.79 is: 7,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.19 : 10,910.49 = 5,351.79 : x
  2. Step 2: Convert to fraction form
    7,905.19/10,910.49 = 5,351.79/x
  3. Step 3: Cross multiply
    7,905.19x = 10,910.49 × 5,351.79
  4. Step 4: Simplify right side
    7,905.19x = 58,390,651.28
  5. Step 5: Solve for x
    x = 58,390,651.28/7,905.19
  6. Step 6: Final answer
    x = 7,386.37

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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.