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Finding the Fourth Proportional to 9,421.05, 12,999.06 and 5,441.10

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Solution

The fourth proportional to 9,421.05, 12,999.06 and 5,441.10 is: 7,507.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.05 : 12,999.06 = 5,441.10 : x
  2. Step 2: Convert to fraction form
    9,421.05/12,999.06 = 5,441.10/x
  3. Step 3: Cross multiply
    9,421.05x = 12,999.06 × 5,441.10
  4. Step 4: Simplify right side
    9,421.05x = 70,729,185.37
  5. Step 5: Solve for x
    x = 70,729,185.37/9,421.05
  6. Step 6: Final answer
    x = 7,507.57

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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.