Home / 9,021.86-12,450.80-5,878.05

Finding the Fourth Proportional to 9,021.86, 12,450.80 and 5,878.05

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Solution

The fourth proportional to 9,021.86, 12,450.80 and 5,878.05 is: 8,112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.86 : 12,450.80 = 5,878.05 : x
  2. Step 2: Convert to fraction form
    9,021.86/12,450.80 = 5,878.05/x
  3. Step 3: Cross multiply
    9,021.86x = 12,450.80 × 5,878.05
  4. Step 4: Simplify right side
    9,021.86x = 73,186,392.94
  5. Step 5: Solve for x
    x = 73,186,392.94/9,021.86
  6. Step 6: Final answer
    x = 8,112.12

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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.