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Finding the Fourth Proportional to 2,369.65, 3,554.85 and 809.80

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Solution

The fourth proportional to 2,369.65, 3,554.85 and 809.80 is: 1,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,369.65 : 3,554.85 = 809.80 : x
  2. Step 2: Convert to fraction form
    2,369.65/3,554.85 = 809.80/x
  3. Step 3: Cross multiply
    2,369.65x = 3,554.85 × 809.80
  4. Step 4: Simplify right side
    2,369.65x = 2,878,717.53
  5. Step 5: Solve for x
    x = 2,878,717.53/2,369.65
  6. Step 6: Final answer
    x = 1,214.83

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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.