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Finding the Fourth Proportional to 7,902.51, 10,907.79 and 4,916.85

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Solution

The fourth proportional to 7,902.51, 10,907.79 and 4,916.85 is: 6,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,902.51 : 10,907.79 = 4,916.85 : x
  2. Step 2: Convert to fraction form
    7,902.51/10,907.79 = 4,916.85/x
  3. Step 3: Cross multiply
    7,902.51x = 10,907.79 × 4,916.85
  4. Step 4: Simplify right side
    7,902.51x = 53,631,967.26
  5. Step 5: Solve for x
    x = 53,631,967.26/7,902.51
  6. Step 6: Final answer
    x = 6,786.70

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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.