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Finding the Fourth Proportional to 4,056, 6,084.96 and 1,320

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Solution

The fourth proportional to 4,056, 6,084.96 and 1,320 is: 1,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,056 : 6,084.96 = 1,320 : x
  2. Step 2: Convert to fraction form
    4,056/6,084.96 = 1,320/x
  3. Step 3: Cross multiply
    4,056x = 6,084.96 × 1,320
  4. Step 4: Simplify right side
    4,056x = 8,032,147.20
  5. Step 5: Solve for x
    x = 8,032,147.20/4,056
  6. Step 6: Final answer
    x = 1,980.31

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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.