Home / 9,412.12-12,991.09-6,392.35

Finding the Fourth Proportional to 9,412.12, 12,991.09 and 6,392.35

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Solution

The fourth proportional to 9,412.12, 12,991.09 and 6,392.35 is: 8,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.12 : 12,991.09 = 6,392.35 : x
  2. Step 2: Convert to fraction form
    9,412.12/12,991.09 = 6,392.35/x
  3. Step 3: Cross multiply
    9,412.12x = 12,991.09 × 6,392.35
  4. Step 4: Simplify right side
    9,412.12x = 83,043,562.20
  5. Step 5: Solve for x
    x = 83,043,562.20/9,412.12
  6. Step 6: Final answer
    x = 8,823.05

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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.