Home / 3,080.58-4,621.80-1,438.08

Finding the Fourth Proportional to 3,080.58, 4,621.80 and 1,438.08

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Solution

The fourth proportional to 3,080.58, 4,621.80 and 1,438.08 is: 2,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.58 : 4,621.80 = 1,438.08 : x
  2. Step 2: Convert to fraction form
    3,080.58/4,621.80 = 1,438.08/x
  3. Step 3: Cross multiply
    3,080.58x = 4,621.80 × 1,438.08
  4. Step 4: Simplify right side
    3,080.58x = 6,646,518.14
  5. Step 5: Solve for x
    x = 6,646,518.14/3,080.58
  6. Step 6: Final answer
    x = 2,157.55

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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.