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Finding the Fourth Proportional to 5,783.52, 7,980.72 and 3,300

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Solution

The fourth proportional to 5,783.52, 7,980.72 and 3,300 is: 4,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.52 : 7,980.72 = 3,300 : x
  2. Step 2: Convert to fraction form
    5,783.52/7,980.72 = 3,300/x
  3. Step 3: Cross multiply
    5,783.52x = 7,980.72 × 3,300
  4. Step 4: Simplify right side
    5,783.52x = 26,336,376
  5. Step 5: Solve for x
    x = 26,336,376/5,783.52
  6. Step 6: Final answer
    x = 4,553.69

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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.