Home / 9,139.25-12,606.21-6,454.37

Finding the Fourth Proportional to 9,139.25, 12,606.21 and 6,454.37

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Solution

The fourth proportional to 9,139.25, 12,606.21 and 6,454.37 is: 8,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.25 : 12,606.21 = 6,454.37 : x
  2. Step 2: Convert to fraction form
    9,139.25/12,606.21 = 6,454.37/x
  3. Step 3: Cross multiply
    9,139.25x = 12,606.21 × 6,454.37
  4. Step 4: Simplify right side
    9,139.25x = 81,365,175.15
  5. Step 5: Solve for x
    x = 81,365,175.15/9,139.25
  6. Step 6: Final answer
    x = 8,902.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.