Home / 3,069.20-4,602.88-1,121.55

Finding the Fourth Proportional to 3,069.20, 4,602.88 and 1,121.55

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Solution

The fourth proportional to 3,069.20, 4,602.88 and 1,121.55 is: 1,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.20 : 4,602.88 = 1,121.55 : x
  2. Step 2: Convert to fraction form
    3,069.20/4,602.88 = 1,121.55/x
  3. Step 3: Cross multiply
    3,069.20x = 4,602.88 × 1,121.55
  4. Step 4: Simplify right side
    3,069.20x = 5,162,360.06
  5. Step 5: Solve for x
    x = 5,162,360.06/3,069.20
  6. Step 6: Final answer
    x = 1,681.99

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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.