Home / 8,080.55-11,138.45-7,402.58

Finding the Fourth Proportional to 8,080.55, 11,138.45 and 7,402.58

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Solution

The fourth proportional to 8,080.55, 11,138.45 and 7,402.58 is: 10,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.55 : 11,138.45 = 7,402.58 : x
  2. Step 2: Convert to fraction form
    8,080.55/11,138.45 = 7,402.58/x
  3. Step 3: Cross multiply
    8,080.55x = 11,138.45 × 7,402.58
  4. Step 4: Simplify right side
    8,080.55x = 82,453,174.50
  5. Step 5: Solve for x
    x = 82,453,174.50/8,080.55
  6. Step 6: Final answer
    x = 10,203.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.