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Finding the Fourth Proportional to 3,653.79, 5,474.41 and 2,878.76

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Solution

The fourth proportional to 3,653.79, 5,474.41 and 2,878.76 is: 4,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.79 : 5,474.41 = 2,878.76 : x
  2. Step 2: Convert to fraction form
    3,653.79/5,474.41 = 2,878.76/x
  3. Step 3: Cross multiply
    3,653.79x = 5,474.41 × 2,878.76
  4. Step 4: Simplify right side
    3,653.79x = 15,759,477.96
  5. Step 5: Solve for x
    x = 15,759,477.96/3,653.79
  6. Step 6: Final answer
    x = 4,313.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.