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Finding the Fourth Proportional to 2,908.46, 4,011.63 and 1,913.42

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Solution

The fourth proportional to 2,908.46, 4,011.63 and 1,913.42 is: 2,639.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.46 : 4,011.63 = 1,913.42 : x
  2. Step 2: Convert to fraction form
    2,908.46/4,011.63 = 1,913.42/x
  3. Step 3: Cross multiply
    2,908.46x = 4,011.63 × 1,913.42
  4. Step 4: Simplify right side
    2,908.46x = 7,675,933.07
  5. Step 5: Solve for x
    x = 7,675,933.07/2,908.46
  6. Step 6: Final answer
    x = 2,639.17

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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.