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Finding the Fourth Proportional to 7,152.77, 10,728.55 and 1,958.65

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Solution

The fourth proportional to 7,152.77, 10,728.55 and 1,958.65 is: 2,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.77 : 10,728.55 = 1,958.65 : x
  2. Step 2: Convert to fraction form
    7,152.77/10,728.55 = 1,958.65/x
  3. Step 3: Cross multiply
    7,152.77x = 10,728.55 × 1,958.65
  4. Step 4: Simplify right side
    7,152.77x = 21,013,450.08
  5. Step 5: Solve for x
    x = 21,013,450.08/7,152.77
  6. Step 6: Final answer
    x = 2,937.80

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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.