Home / 7,271.10-10,912.05-2,891.70

Finding the Fourth Proportional to 7,271.10, 10,912.05 and 2,891.70

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Solution

The fourth proportional to 7,271.10, 10,912.05 and 2,891.70 is: 4,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.10 : 10,912.05 = 2,891.70 : x
  2. Step 2: Convert to fraction form
    7,271.10/10,912.05 = 2,891.70/x
  3. Step 3: Cross multiply
    7,271.10x = 10,912.05 × 2,891.70
  4. Step 4: Simplify right side
    7,271.10x = 31,554,374.99
  5. Step 5: Solve for x
    x = 31,554,374.99/7,271.10
  6. Step 6: Final answer
    x = 4,339.70

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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.