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Finding the Fourth Proportional to 2,369.94, 3,554.37 and 638.70

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Solution

The fourth proportional to 2,369.94, 3,554.37 and 638.70 is: 957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,369.94 : 3,554.37 = 638.70 : x
  2. Step 2: Convert to fraction form
    2,369.94/3,554.37 = 638.70/x
  3. Step 3: Cross multiply
    2,369.94x = 3,554.37 × 638.70
  4. Step 4: Simplify right side
    2,369.94x = 2,270,176.12
  5. Step 5: Solve for x
    x = 2,270,176.12/2,369.94
  6. Step 6: Final answer
    x = 957.90

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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.