Home / 2,080.02-3,119.40-619.32

Finding the Fourth Proportional to 2,080.02, 3,119.40 and 619.32

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Solution

The fourth proportional to 2,080.02, 3,119.40 and 619.32 is: 928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.02 : 3,119.40 = 619.32 : x
  2. Step 2: Convert to fraction form
    2,080.02/3,119.40 = 619.32/x
  3. Step 3: Cross multiply
    2,080.02x = 3,119.40 × 619.32
  4. Step 4: Simplify right side
    2,080.02x = 1,931,906.81
  5. Step 5: Solve for x
    x = 1,931,906.81/2,080.02
  6. Step 6: Final answer
    x = 928.79

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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.