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Finding the Fourth Proportional to 3,548.91, 5,323.41 and 1,988.67

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Solution

The fourth proportional to 3,548.91, 5,323.41 and 1,988.67 is: 2,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,548.91 : 5,323.41 = 1,988.67 : x
  2. Step 2: Convert to fraction form
    3,548.91/5,323.41 = 1,988.67/x
  3. Step 3: Cross multiply
    3,548.91x = 5,323.41 × 1,988.67
  4. Step 4: Simplify right side
    3,548.91x = 10,586,505.76
  5. Step 5: Solve for x
    x = 10,586,505.76/3,548.91
  6. Step 6: Final answer
    x = 2,983.03

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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.