Home / 7,431.51-11,139.64-3,270.75

Finding the Fourth Proportional to 7,431.51, 11,139.64 and 3,270.75

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Solution

The fourth proportional to 7,431.51, 11,139.64 and 3,270.75 is: 4,902.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.51 : 11,139.64 = 3,270.75 : x
  2. Step 2: Convert to fraction form
    7,431.51/11,139.64 = 3,270.75/x
  3. Step 3: Cross multiply
    7,431.51x = 11,139.64 × 3,270.75
  4. Step 4: Simplify right side
    7,431.51x = 36,434,977.53
  5. Step 5: Solve for x
    x = 36,434,977.53/7,431.51
  6. Step 6: Final answer
    x = 4,902.77

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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.