Home / 8,080.57-12,108.48-5,438.30

Finding the Fourth Proportional to 8,080.57, 12,108.48 and 5,438.30

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Solution

The fourth proportional to 8,080.57, 12,108.48 and 5,438.30 is: 8,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.57 : 12,108.48 = 5,438.30 : x
  2. Step 2: Convert to fraction form
    8,080.57/12,108.48 = 5,438.30/x
  3. Step 3: Cross multiply
    8,080.57x = 12,108.48 × 5,438.30
  4. Step 4: Simplify right side
    8,080.57x = 65,849,486.24
  5. Step 5: Solve for x
    x = 65,849,486.24/8,080.57
  6. Step 6: Final answer
    x = 8,149.12

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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.