Home / 4,989.60-7,485.12-2,069.28

Finding the Fourth Proportional to 4,989.60, 7,485.12 and 2,069.28

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Solution

The fourth proportional to 4,989.60, 7,485.12 and 2,069.28 is: 3,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.60 : 7,485.12 = 2,069.28 : x
  2. Step 2: Convert to fraction form
    4,989.60/7,485.12 = 2,069.28/x
  3. Step 3: Cross multiply
    4,989.60x = 7,485.12 × 2,069.28
  4. Step 4: Simplify right side
    4,989.60x = 15,488,809.11
  5. Step 5: Solve for x
    x = 15,488,809.11/4,989.60
  6. Step 6: Final answer
    x = 3,104.22

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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.