Home / 7,511.55-11,243.70-5,157.78

Finding the Fourth Proportional to 7,511.55, 11,243.70 and 5,157.78

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Solution

The fourth proportional to 7,511.55, 11,243.70 and 5,157.78 is: 7,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,511.55 : 11,243.70 = 5,157.78 : x
  2. Step 2: Convert to fraction form
    7,511.55/11,243.70 = 5,157.78/x
  3. Step 3: Cross multiply
    7,511.55x = 11,243.70 × 5,157.78
  4. Step 4: Simplify right side
    7,511.55x = 57,992,530.99
  5. Step 5: Solve for x
    x = 57,992,530.99/7,511.55
  6. Step 6: Final answer
    x = 7,720.45

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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.