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Finding the Fourth Proportional to 5,072.76, 7,609.02 and 1,324.48

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Solution

The fourth proportional to 5,072.76, 7,609.02 and 1,324.48 is: 1,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.76 : 7,609.02 = 1,324.48 : x
  2. Step 2: Convert to fraction form
    5,072.76/7,609.02 = 1,324.48/x
  3. Step 3: Cross multiply
    5,072.76x = 7,609.02 × 1,324.48
  4. Step 4: Simplify right side
    5,072.76x = 10,077,994.81
  5. Step 5: Solve for x
    x = 10,077,994.81/5,072.76
  6. Step 6: Final answer
    x = 1,986.69

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Half scale
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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.