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Finding the Fourth Proportional to 5,910.80, 8,866.20 and 4,971.20

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Solution

The fourth proportional to 5,910.80, 8,866.20 and 4,971.20 is: 7,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,910.80 : 8,866.20 = 4,971.20 : x
  2. Step 2: Convert to fraction form
    5,910.80/8,866.20 = 4,971.20/x
  3. Step 3: Cross multiply
    5,910.80x = 8,866.20 × 4,971.20
  4. Step 4: Simplify right side
    5,910.80x = 44,075,653.44
  5. Step 5: Solve for x
    x = 44,075,653.44/5,910.80
  6. Step 6: Final answer
    x = 7,456.80

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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.