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Finding the Fourth Proportional to 8,610.56, 12,925.56 and 3,420.08

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Solution

The fourth proportional to 8,610.56, 12,925.56 and 3,420.08 is: 5,133.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.56 : 12,925.56 = 3,420.08 : x
  2. Step 2: Convert to fraction form
    8,610.56/12,925.56 = 3,420.08/x
  3. Step 3: Cross multiply
    8,610.56x = 12,925.56 × 3,420.08
  4. Step 4: Simplify right side
    8,610.56x = 44,206,449.24
  5. Step 5: Solve for x
    x = 44,206,449.24/8,610.56
  6. Step 6: Final answer
    x = 5,133.98

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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.