Home / 8,394.29-12,587.14-3,129.09

Finding the Fourth Proportional to 8,394.29, 12,587.14 and 3,129.09

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Solution

The fourth proportional to 8,394.29, 12,587.14 and 3,129.09 is: 4,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.29 : 12,587.14 = 3,129.09 : x
  2. Step 2: Convert to fraction form
    8,394.29/12,587.14 = 3,129.09/x
  3. Step 3: Cross multiply
    8,394.29x = 12,587.14 × 3,129.09
  4. Step 4: Simplify right side
    8,394.29x = 39,386,293.90
  5. Step 5: Solve for x
    x = 39,386,293.90/8,394.29
  6. Step 6: Final answer
    x = 4,692.03

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1.5x scale

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.