Home / 2,080.76-3,120.60-619.58

Finding the Fourth Proportional to 2,080.76, 3,120.60 and 619.58

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Solution

The fourth proportional to 2,080.76, 3,120.60 and 619.58 is: 929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.76 : 3,120.60 = 619.58 : x
  2. Step 2: Convert to fraction form
    2,080.76/3,120.60 = 619.58/x
  3. Step 3: Cross multiply
    2,080.76x = 3,120.60 × 619.58
  4. Step 4: Simplify right side
    2,080.76x = 1,933,445.75
  5. Step 5: Solve for x
    x = 1,933,445.75/2,080.76
  6. Step 6: Final answer
    x = 929.20

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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.