Home / 8,720.06-13,080.69-2,880.77

Finding the Fourth Proportional to 8,720.06, 13,080.69 and 2,880.77

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Solution

The fourth proportional to 8,720.06, 13,080.69 and 2,880.77 is: 4,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.06 : 13,080.69 = 2,880.77 : x
  2. Step 2: Convert to fraction form
    8,720.06/13,080.69 = 2,880.77/x
  3. Step 3: Cross multiply
    8,720.06x = 13,080.69 × 2,880.77
  4. Step 4: Simplify right side
    8,720.06x = 37,682,393.93
  5. Step 5: Solve for x
    x = 37,682,393.93/8,720.06
  6. Step 6: Final answer
    x = 4,321.35

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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.