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Finding the Fourth Proportional to 2,783.68, 4,174.09 and 835.63

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Solution

The fourth proportional to 2,783.68, 4,174.09 and 835.63 is: 1,253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.68 : 4,174.09 = 835.63 : x
  2. Step 2: Convert to fraction form
    2,783.68/4,174.09 = 835.63/x
  3. Step 3: Cross multiply
    2,783.68x = 4,174.09 × 835.63
  4. Step 4: Simplify right side
    2,783.68x = 3,487,990.65
  5. Step 5: Solve for x
    x = 3,487,990.65/2,783.68
  6. Step 6: Final answer
    x = 1,253.01

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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.