Home / 8,412.30-12,619.35-3,149.82

Finding the Fourth Proportional to 8,412.30, 12,619.35 and 3,149.82

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Solution

The fourth proportional to 8,412.30, 12,619.35 and 3,149.82 is: 4,725.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.30 : 12,619.35 = 3,149.82 : x
  2. Step 2: Convert to fraction form
    8,412.30/12,619.35 = 3,149.82/x
  3. Step 3: Cross multiply
    8,412.30x = 12,619.35 × 3,149.82
  4. Step 4: Simplify right side
    8,412.30x = 39,748,681.02
  5. Step 5: Solve for x
    x = 39,748,681.02/8,412.30
  6. Step 6: Final answer
    x = 4,725.07

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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.