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Finding the Fourth Proportional to 7,152.39, 10,728.60 and 1,958.25

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Solution

The fourth proportional to 7,152.39, 10,728.60 and 1,958.25 is: 2,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.39 : 10,728.60 = 1,958.25 : x
  2. Step 2: Convert to fraction form
    7,152.39/10,728.60 = 1,958.25/x
  3. Step 3: Cross multiply
    7,152.39x = 10,728.60 × 1,958.25
  4. Step 4: Simplify right side
    7,152.39x = 21,009,280.95
  5. Step 5: Solve for x
    x = 21,009,280.95/7,152.39
  6. Step 6: Final answer
    x = 2,937.38

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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.