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Finding the Fourth Proportional to 2,170.00, 3,254.32 and 783.15

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Solution

The fourth proportional to 2,170.00, 3,254.32 and 783.15 is: 1,174.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.00 : 3,254.32 = 783.15 : x
  2. Step 2: Convert to fraction form
    2,170.00/3,254.32 = 783.15/x
  3. Step 3: Cross multiply
    2,170.00x = 3,254.32 × 783.15
  4. Step 4: Simplify right side
    2,170.00x = 2,548,612.65
  5. Step 5: Solve for x
    x = 2,548,612.65/2,170.00
  6. Step 6: Final answer
    x = 1,174.48

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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.