Home / 9,412.56-12,989.40-6,622.92

Finding the Fourth Proportional to 9,412.56, 12,989.40 and 6,622.92

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Solution

The fourth proportional to 9,412.56, 12,989.40 and 6,622.92 is: 9,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.56 : 12,989.40 = 6,622.92 : x
  2. Step 2: Convert to fraction form
    9,412.56/12,989.40 = 6,622.92/x
  3. Step 3: Cross multiply
    9,412.56x = 12,989.40 × 6,622.92
  4. Step 4: Simplify right side
    9,412.56x = 86,027,757.05
  5. Step 5: Solve for x
    x = 86,027,757.05/9,412.56
  6. Step 6: Final answer
    x = 9,139.68

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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.