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Finding the Fourth Proportional to 2,933.60, 4,401.09 and 853.65

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Solution

The fourth proportional to 2,933.60, 4,401.09 and 853.65 is: 1,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,933.60 : 4,401.09 = 853.65 : x
  2. Step 2: Convert to fraction form
    2,933.60/4,401.09 = 853.65/x
  3. Step 3: Cross multiply
    2,933.60x = 4,401.09 × 853.65
  4. Step 4: Simplify right side
    2,933.60x = 3,756,990.48
  5. Step 5: Solve for x
    x = 3,756,990.48/2,933.60
  6. Step 6: Final answer
    x = 1,280.68

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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.