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Finding the Fourth Proportional to 7,145.80, 10,692.78 and 6,037.72

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Solution

The fourth proportional to 7,145.80, 10,692.78 and 6,037.72 is: 9,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.80 : 10,692.78 = 6,037.72 : x
  2. Step 2: Convert to fraction form
    7,145.80/10,692.78 = 6,037.72/x
  3. Step 3: Cross multiply
    7,145.80x = 10,692.78 × 6,037.72
  4. Step 4: Simplify right side
    7,145.80x = 64,560,011.66
  5. Step 5: Solve for x
    x = 64,560,011.66/7,145.80
  6. Step 6: Final answer
    x = 9,034.68

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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.