Home / 7,515.96-11,265.42-5,428.59

Finding the Fourth Proportional to 7,515.96, 11,265.42 and 5,428.59

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Solution

The fourth proportional to 7,515.96, 11,265.42 and 5,428.59 is: 8,136.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.96 : 11,265.42 = 5,428.59 : x
  2. Step 2: Convert to fraction form
    7,515.96/11,265.42 = 5,428.59/x
  3. Step 3: Cross multiply
    7,515.96x = 11,265.42 × 5,428.59
  4. Step 4: Simplify right side
    7,515.96x = 61,155,346.36
  5. Step 5: Solve for x
    x = 61,155,346.36/7,515.96
  6. Step 6: Final answer
    x = 8,136.73

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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.