Home / 4,905.12-7,338.48-3,120.12

Finding the Fourth Proportional to 4,905.12, 7,338.48 and 3,120.12

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Solution

The fourth proportional to 4,905.12, 7,338.48 and 3,120.12 is: 4,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.12 : 7,338.48 = 3,120.12 : x
  2. Step 2: Convert to fraction form
    4,905.12/7,338.48 = 3,120.12/x
  3. Step 3: Cross multiply
    4,905.12x = 7,338.48 × 3,120.12
  4. Step 4: Simplify right side
    4,905.12x = 22,896,938.22
  5. Step 5: Solve for x
    x = 22,896,938.22/4,905.12
  6. Step 6: Final answer
    x = 4,667.97

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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.