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Finding the Fourth Proportional to 5,422.76, 7,483.42 and 2,938.76

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Solution

The fourth proportional to 5,422.76, 7,483.42 and 2,938.76 is: 4,055.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.76 : 7,483.42 = 2,938.76 : x
  2. Step 2: Convert to fraction form
    5,422.76/7,483.42 = 2,938.76/x
  3. Step 3: Cross multiply
    5,422.76x = 7,483.42 × 2,938.76
  4. Step 4: Simplify right side
    5,422.76x = 21,991,975.36
  5. Step 5: Solve for x
    x = 21,991,975.36/5,422.76
  6. Step 6: Final answer
    x = 4,055.49

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.