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Finding the Fourth Proportional to 5,269.28, 7,897.84 and 1,980.27

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Solution

The fourth proportional to 5,269.28, 7,897.84 and 1,980.27 is: 2,968.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.28 : 7,897.84 = 1,980.27 : x
  2. Step 2: Convert to fraction form
    5,269.28/7,897.84 = 1,980.27/x
  3. Step 3: Cross multiply
    5,269.28x = 7,897.84 × 1,980.27
  4. Step 4: Simplify right side
    5,269.28x = 15,639,855.62
  5. Step 5: Solve for x
    x = 15,639,855.62/5,269.28
  6. Step 6: Final answer
    x = 2,968.12

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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.