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Finding the Fourth Proportional to 7,145.77, 10,718.52 and 1,951.64

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Solution

The fourth proportional to 7,145.77, 10,718.52 and 1,951.64 is: 2,927.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.77 : 10,718.52 = 1,951.64 : x
  2. Step 2: Convert to fraction form
    7,145.77/10,718.52 = 1,951.64/x
  3. Step 3: Cross multiply
    7,145.77x = 10,718.52 × 1,951.64
  4. Step 4: Simplify right side
    7,145.77x = 20,918,692.37
  5. Step 5: Solve for x
    x = 20,918,692.37/7,145.77
  6. Step 6: Final answer
    x = 2,927.42

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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.