Home / 9,412.62-12,989.44-5,221.68

Finding the Fourth Proportional to 9,412.62, 12,989.44 and 5,221.68

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Solution

The fourth proportional to 9,412.62, 12,989.44 and 5,221.68 is: 7,205.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.62 : 12,989.44 = 5,221.68 : x
  2. Step 2: Convert to fraction form
    9,412.62/12,989.44 = 5,221.68/x
  3. Step 3: Cross multiply
    9,412.62x = 12,989.44 × 5,221.68
  4. Step 4: Simplify right side
    9,412.62x = 67,826,699.06
  5. Step 5: Solve for x
    x = 67,826,699.06/9,412.62
  6. Step 6: Final answer
    x = 7,205.93

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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.