Home / 9,039.08-12,450.56-6,381.87

Finding the Fourth Proportional to 9,039.08, 12,450.56 and 6,381.87

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Solution

The fourth proportional to 9,039.08, 12,450.56 and 6,381.87 is: 8,790.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,039.08 : 12,450.56 = 6,381.87 : x
  2. Step 2: Convert to fraction form
    9,039.08/12,450.56 = 6,381.87/x
  3. Step 3: Cross multiply
    9,039.08x = 12,450.56 × 6,381.87
  4. Step 4: Simplify right side
    9,039.08x = 79,457,823.44
  5. Step 5: Solve for x
    x = 79,457,823.44/9,039.08
  6. Step 6: Final answer
    x = 8,790.48

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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.