Home / 8,421.24-12,635.10-3,225.90

Finding the Fourth Proportional to 8,421.24, 12,635.10 and 3,225.90

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Solution

The fourth proportional to 8,421.24, 12,635.10 and 3,225.90 is: 4,840.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.24 : 12,635.10 = 3,225.90 : x
  2. Step 2: Convert to fraction form
    8,421.24/12,635.10 = 3,225.90/x
  3. Step 3: Cross multiply
    8,421.24x = 12,635.10 × 3,225.90
  4. Step 4: Simplify right side
    8,421.24x = 40,759,569.09
  5. Step 5: Solve for x
    x = 40,759,569.09/8,421.24
  6. Step 6: Final answer
    x = 4,840.09

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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.