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Finding the Fourth Proportional to 7,105.55, 10,658.36 and 1,840.19

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Solution

The fourth proportional to 7,105.55, 10,658.36 and 1,840.19 is: 2,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.55 : 10,658.36 = 1,840.19 : x
  2. Step 2: Convert to fraction form
    7,105.55/10,658.36 = 1,840.19/x
  3. Step 3: Cross multiply
    7,105.55x = 10,658.36 × 1,840.19
  4. Step 4: Simplify right side
    7,105.55x = 19,613,438.73
  5. Step 5: Solve for x
    x = 19,613,438.73/7,105.55
  6. Step 6: Final answer
    x = 2,760.30

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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.