Home / 9,076.15-12,520.58-7,879.51

Finding the Fourth Proportional to 9,076.15, 12,520.58 and 7,879.51

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Solution

The fourth proportional to 9,076.15, 12,520.58 and 7,879.51 is: 10,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,076.15 : 12,520.58 = 7,879.51 : x
  2. Step 2: Convert to fraction form
    9,076.15/12,520.58 = 7,879.51/x
  3. Step 3: Cross multiply
    9,076.15x = 12,520.58 × 7,879.51
  4. Step 4: Simplify right side
    9,076.15x = 98,656,011.57
  5. Step 5: Solve for x
    x = 98,656,011.57/9,076.15
  6. Step 6: Final answer
    x = 10,869.81

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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.