Home / 3,469.20-4,776.40-3,089.28

Finding the Fourth Proportional to 3,469.20, 4,776.40 and 3,089.28

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Solution

The fourth proportional to 3,469.20, 4,776.40 and 3,089.28 is: 4,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.20 : 4,776.40 = 3,089.28 : x
  2. Step 2: Convert to fraction form
    3,469.20/4,776.40 = 3,089.28/x
  3. Step 3: Cross multiply
    3,469.20x = 4,776.40 × 3,089.28
  4. Step 4: Simplify right side
    3,469.20x = 14,755,636.99
  5. Step 5: Solve for x
    x = 14,755,636.99/3,469.20
  6. Step 6: Final answer
    x = 4,253.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.