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Finding the Fourth Proportional to 2,369.50, 3,554.25 and 638.13

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Solution

The fourth proportional to 2,369.50, 3,554.25 and 638.13 is: 957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,369.50 : 3,554.25 = 638.13 : x
  2. Step 2: Convert to fraction form
    2,369.50/3,554.25 = 638.13/x
  3. Step 3: Cross multiply
    2,369.50x = 3,554.25 × 638.13
  4. Step 4: Simplify right side
    2,369.50x = 2,268,055.78
  5. Step 5: Solve for x
    x = 2,268,055.78/2,369.50
  6. Step 6: Final answer
    x = 957.19

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Double scale
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Similar ratio
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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.