Home / 8,418.54-12,632.34-3,157.11

Finding the Fourth Proportional to 8,418.54, 12,632.34 and 3,157.11

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Solution

The fourth proportional to 8,418.54, 12,632.34 and 3,157.11 is: 4,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.54 : 12,632.34 = 3,157.11 : x
  2. Step 2: Convert to fraction form
    8,418.54/12,632.34 = 3,157.11/x
  3. Step 3: Cross multiply
    8,418.54x = 12,632.34 × 3,157.11
  4. Step 4: Simplify right side
    8,418.54x = 39,881,686.94
  5. Step 5: Solve for x
    x = 39,881,686.94/8,418.54
  6. Step 6: Final answer
    x = 4,737.36

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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.