Home / 8,392.21-12,580.11-3,123.36

Finding the Fourth Proportional to 8,392.21, 12,580.11 and 3,123.36

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Solution

The fourth proportional to 8,392.21, 12,580.11 and 3,123.36 is: 4,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.21 : 12,580.11 = 3,123.36 : x
  2. Step 2: Convert to fraction form
    8,392.21/12,580.11 = 3,123.36/x
  3. Step 3: Cross multiply
    8,392.21x = 12,580.11 × 3,123.36
  4. Step 4: Simplify right side
    8,392.21x = 39,292,212.37
  5. Step 5: Solve for x
    x = 39,292,212.37/8,392.21
  6. Step 6: Final answer
    x = 4,681.99

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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.