Home / 5,320.44-7,981-1,622.80

Finding the Fourth Proportional to 5,320.44, 7,981 and 1,622.80

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Solution

The fourth proportional to 5,320.44, 7,981 and 1,622.80 is: 2,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.44 : 7,981 = 1,622.80 : x
  2. Step 2: Convert to fraction form
    5,320.44/7,981 = 1,622.80/x
  3. Step 3: Cross multiply
    5,320.44x = 7,981 × 1,622.80
  4. Step 4: Simplify right side
    5,320.44x = 12,951,566.80
  5. Step 5: Solve for x
    x = 12,951,566.80/5,320.44
  6. Step 6: Final answer
    x = 2,434.30

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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.