Home / 8,715.60-13,080.12-3,525.20

Finding the Fourth Proportional to 8,715.60, 13,080.12 and 3,525.20

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Solution

The fourth proportional to 8,715.60, 13,080.12 and 3,525.20 is: 5,290.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.60 : 13,080.12 = 3,525.20 : x
  2. Step 2: Convert to fraction form
    8,715.60/13,080.12 = 3,525.20/x
  3. Step 3: Cross multiply
    8,715.60x = 13,080.12 × 3,525.20
  4. Step 4: Simplify right side
    8,715.60x = 46,110,039.02
  5. Step 5: Solve for x
    x = 46,110,039.02/8,715.60
  6. Step 6: Final answer
    x = 5,290.52

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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.