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Finding the Fourth Proportional to 5,271, 7,273.88 and 2,880.90

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Solution

The fourth proportional to 5,271, 7,273.88 and 2,880.90 is: 3,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271 : 7,273.88 = 2,880.90 : x
  2. Step 2: Convert to fraction form
    5,271/7,273.88 = 2,880.90/x
  3. Step 3: Cross multiply
    5,271x = 7,273.88 × 2,880.90
  4. Step 4: Simplify right side
    5,271x = 20,955,320.89
  5. Step 5: Solve for x
    x = 20,955,320.89/5,271
  6. Step 6: Final answer
    x = 3,975.59

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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.