Home / 4,785.12-7,185.60-3,615.12

Finding the Fourth Proportional to 4,785.12, 7,185.60 and 3,615.12

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Solution

The fourth proportional to 4,785.12, 7,185.60 and 3,615.12 is: 5,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.12 : 7,185.60 = 3,615.12 : x
  2. Step 2: Convert to fraction form
    4,785.12/7,185.60 = 3,615.12/x
  3. Step 3: Cross multiply
    4,785.12x = 7,185.60 × 3,615.12
  4. Step 4: Simplify right side
    4,785.12x = 25,976,806.27
  5. Step 5: Solve for x
    x = 25,976,806.27/4,785.12
  6. Step 6: Final answer
    x = 5,428.66

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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.