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Finding the Fourth Proportional to 7,199.55, 9,935.14 and 4,405.05

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Solution

The fourth proportional to 7,199.55, 9,935.14 and 4,405.05 is: 6,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,199.55 : 9,935.14 = 4,405.05 : x
  2. Step 2: Convert to fraction form
    7,199.55/9,935.14 = 4,405.05/x
  3. Step 3: Cross multiply
    7,199.55x = 9,935.14 × 4,405.05
  4. Step 4: Simplify right side
    7,199.55x = 43,764,788.46
  5. Step 5: Solve for x
    x = 43,764,788.46/7,199.55
  6. Step 6: Final answer
    x = 6,078.82

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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.