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Finding the Fourth Proportional to 5,260.80, 7,893.96 and 1,976.16

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Solution

The fourth proportional to 5,260.80, 7,893.96 and 1,976.16 is: 2,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.80 : 7,893.96 = 1,976.16 : x
  2. Step 2: Convert to fraction form
    5,260.80/7,893.96 = 1,976.16/x
  3. Step 3: Cross multiply
    5,260.80x = 7,893.96 × 1,976.16
  4. Step 4: Simplify right side
    5,260.80x = 15,599,727.99
  5. Step 5: Solve for x
    x = 15,599,727.99/5,260.80
  6. Step 6: Final answer
    x = 2,965.28

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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.