Home / 3,080.64-4,621.44-1,620

Finding the Fourth Proportional to 3,080.64, 4,621.44 and 1,620

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Solution

The fourth proportional to 3,080.64, 4,621.44 and 1,620 is: 2,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.64 : 4,621.44 = 1,620 : x
  2. Step 2: Convert to fraction form
    3,080.64/4,621.44 = 1,620/x
  3. Step 3: Cross multiply
    3,080.64x = 4,621.44 × 1,620
  4. Step 4: Simplify right side
    3,080.64x = 7,486,732.80
  5. Step 5: Solve for x
    x = 7,486,732.80/3,080.64
  6. Step 6: Final answer
    x = 2,430.25

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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.