Home / 5,388.12-8,080.56-1,691.28

Finding the Fourth Proportional to 5,388.12, 8,080.56 and 1,691.28

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Solution

The fourth proportional to 5,388.12, 8,080.56 and 1,691.28 is: 2,536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.12 : 8,080.56 = 1,691.28 : x
  2. Step 2: Convert to fraction form
    5,388.12/8,080.56 = 1,691.28/x
  3. Step 3: Cross multiply
    5,388.12x = 8,080.56 × 1,691.28
  4. Step 4: Simplify right side
    5,388.12x = 13,666,489.52
  5. Step 5: Solve for x
    x = 13,666,489.52/5,388.12
  6. Step 6: Final answer
    x = 2,536.41

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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.