Home / 7,669.28-11,509.24-3,509.80

Finding the Fourth Proportional to 7,669.28, 11,509.24 and 3,509.80

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Solution

The fourth proportional to 7,669.28, 11,509.24 and 3,509.80 is: 5,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,669.28 : 11,509.24 = 3,509.80 : x
  2. Step 2: Convert to fraction form
    7,669.28/11,509.24 = 3,509.80/x
  3. Step 3: Cross multiply
    7,669.28x = 11,509.24 × 3,509.80
  4. Step 4: Simplify right side
    7,669.28x = 40,395,130.55
  5. Step 5: Solve for x
    x = 40,395,130.55/7,669.28
  6. Step 6: Final answer
    x = 5,267.13

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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.