Home / 4,905-6,769.32-2,809.56

Finding the Fourth Proportional to 4,905, 6,769.32 and 2,809.56

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Solution

The fourth proportional to 4,905, 6,769.32 and 2,809.56 is: 3,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905 : 6,769.32 = 2,809.56 : x
  2. Step 2: Convert to fraction form
    4,905/6,769.32 = 2,809.56/x
  3. Step 3: Cross multiply
    4,905x = 6,769.32 × 2,809.56
  4. Step 4: Simplify right side
    4,905x = 19,018,810.70
  5. Step 5: Solve for x
    x = 19,018,810.70/4,905
  6. Step 6: Final answer
    x = 3,877.43

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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.