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Finding the Fourth Proportional to 7,100.12, 9,798.24 and 3,956.48

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Solution

The fourth proportional to 7,100.12, 9,798.24 and 3,956.48 is: 5,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,100.12 : 9,798.24 = 3,956.48 : x
  2. Step 2: Convert to fraction form
    7,100.12/9,798.24 = 3,956.48/x
  3. Step 3: Cross multiply
    7,100.12x = 9,798.24 × 3,956.48
  4. Step 4: Simplify right side
    7,100.12x = 38,766,540.60
  5. Step 5: Solve for x
    x = 38,766,540.60/7,100.12
  6. Step 6: Final answer
    x = 5,459.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.