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Finding the Fourth Proportional to 3,455.19, 4,769.19 and 3,278.82

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Solution

The fourth proportional to 3,455.19, 4,769.19 and 3,278.82 is: 4,525.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.19 : 4,769.19 = 3,278.82 : x
  2. Step 2: Convert to fraction form
    3,455.19/4,769.19 = 3,278.82/x
  3. Step 3: Cross multiply
    3,455.19x = 4,769.19 × 3,278.82
  4. Step 4: Simplify right side
    3,455.19x = 15,637,315.56
  5. Step 5: Solve for x
    x = 15,637,315.56/3,455.19
  6. Step 6: Final answer
    x = 4,525.75

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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.