Home / 7,748.54-11,622.67-1,905.20

Finding the Fourth Proportional to 7,748.54, 11,622.67 and 1,905.20

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Solution

The fourth proportional to 7,748.54, 11,622.67 and 1,905.20 is: 2,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,748.54 : 11,622.67 = 1,905.20 : x
  2. Step 2: Convert to fraction form
    7,748.54/11,622.67 = 1,905.20/x
  3. Step 3: Cross multiply
    7,748.54x = 11,622.67 × 1,905.20
  4. Step 4: Simplify right side
    7,748.54x = 22,143,510.88
  5. Step 5: Solve for x
    x = 22,143,510.88/7,748.54
  6. Step 6: Final answer
    x = 2,857.77

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1.5x scale

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.