Home / 2,080.32-3,120.65-619.47

Finding the Fourth Proportional to 2,080.32, 3,120.65 and 619.47

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Solution

The fourth proportional to 2,080.32, 3,120.65 and 619.47 is: 929.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.32 : 3,120.65 = 619.47 : x
  2. Step 2: Convert to fraction form
    2,080.32/3,120.65 = 619.47/x
  3. Step 3: Cross multiply
    2,080.32x = 3,120.65 × 619.47
  4. Step 4: Simplify right side
    2,080.32x = 1,933,145.96
  5. Step 5: Solve for x
    x = 1,933,145.96/2,080.32
  6. Step 6: Final answer
    x = 929.25

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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.