Home / 8,720.64-13,080.94-3,530.16

Finding the Fourth Proportional to 8,720.64, 13,080.94 and 3,530.16

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Solution

The fourth proportional to 8,720.64, 13,080.94 and 3,530.16 is: 5,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.64 : 13,080.94 = 3,530.16 : x
  2. Step 2: Convert to fraction form
    8,720.64/13,080.94 = 3,530.16/x
  3. Step 3: Cross multiply
    8,720.64x = 13,080.94 × 3,530.16
  4. Step 4: Simplify right side
    8,720.64x = 46,177,811.15
  5. Step 5: Solve for x
    x = 46,177,811.15/8,720.64
  6. Step 6: Final answer
    x = 5,295.23

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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.