Home / 8,669.10-13,002.39-3,121.59

Finding the Fourth Proportional to 8,669.10, 13,002.39 and 3,121.59

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Solution

The fourth proportional to 8,669.10, 13,002.39 and 3,121.59 is: 4,681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.10 : 13,002.39 = 3,121.59 : x
  2. Step 2: Convert to fraction form
    8,669.10/13,002.39 = 3,121.59/x
  3. Step 3: Cross multiply
    8,669.10x = 13,002.39 × 3,121.59
  4. Step 4: Simplify right side
    8,669.10x = 40,588,130.60
  5. Step 5: Solve for x
    x = 40,588,130.60/8,669.10
  6. Step 6: Final answer
    x = 4,681.93

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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.