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Finding the Fourth Proportional to 5,271.45, 7,910.46 and 1,984.11

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Solution

The fourth proportional to 5,271.45, 7,910.46 and 1,984.11 is: 2,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.45 : 7,910.46 = 1,984.11 : x
  2. Step 2: Convert to fraction form
    5,271.45/7,910.46 = 1,984.11/x
  3. Step 3: Cross multiply
    5,271.45x = 7,910.46 × 1,984.11
  4. Step 4: Simplify right side
    5,271.45x = 15,695,222.79
  5. Step 5: Solve for x
    x = 15,695,222.79/5,271.45
  6. Step 6: Final answer
    x = 2,977.40

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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.