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Finding the Fourth Proportional to 5,199, 7,798.50 and 2,080.40

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Solution

The fourth proportional to 5,199, 7,798.50 and 2,080.40 is: 3,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199 : 7,798.50 = 2,080.40 : x
  2. Step 2: Convert to fraction form
    5,199/7,798.50 = 2,080.40/x
  3. Step 3: Cross multiply
    5,199x = 7,798.50 × 2,080.40
  4. Step 4: Simplify right side
    5,199x = 16,223,960.41
  5. Step 5: Solve for x
    x = 16,223,960.41/5,199
  6. Step 6: Final answer
    x = 3,120.59

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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.