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Finding the Fourth Proportional to 3,698.65, 5,103.95 and 2,019.74

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Solution

The fourth proportional to 3,698.65, 5,103.95 and 2,019.74 is: 2,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.65 : 5,103.95 = 2,019.74 : x
  2. Step 2: Convert to fraction form
    3,698.65/5,103.95 = 2,019.74/x
  3. Step 3: Cross multiply
    3,698.65x = 5,103.95 × 2,019.74
  4. Step 4: Simplify right side
    3,698.65x = 10,308,624.88
  5. Step 5: Solve for x
    x = 10,308,624.88/3,698.65
  6. Step 6: Final answer
    x = 2,787.13

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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.