Home / 3,069.60-4,602.96-1,121.28

Finding the Fourth Proportional to 3,069.60, 4,602.96 and 1,121.28

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Solution

The fourth proportional to 3,069.60, 4,602.96 and 1,121.28 is: 1,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.60 : 4,602.96 = 1,121.28 : x
  2. Step 2: Convert to fraction form
    3,069.60/4,602.96 = 1,121.28/x
  3. Step 3: Cross multiply
    3,069.60x = 4,602.96 × 1,121.28
  4. Step 4: Simplify right side
    3,069.60x = 5,161,206.99
  5. Step 5: Solve for x
    x = 5,161,206.99/3,069.60
  6. Step 6: Final answer
    x = 1,681.39

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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.