Home / 4,621.64-6,932.36-1,990.90

Finding the Fourth Proportional to 4,621.64, 6,932.36 and 1,990.90

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Solution

The fourth proportional to 4,621.64, 6,932.36 and 1,990.90 is: 2,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,621.64 : 6,932.36 = 1,990.90 : x
  2. Step 2: Convert to fraction form
    4,621.64/6,932.36 = 1,990.90/x
  3. Step 3: Cross multiply
    4,621.64x = 6,932.36 × 1,990.90
  4. Step 4: Simplify right side
    4,621.64x = 13,801,623.17
  5. Step 5: Solve for x
    x = 13,801,623.17/4,621.64
  6. Step 6: Final answer
    x = 2,986.30

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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.