Home / 7,218.30-10,827.45-4,107.90

Finding the Fourth Proportional to 7,218.30, 10,827.45 and 4,107.90

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Solution

The fourth proportional to 7,218.30, 10,827.45 and 4,107.90 is: 6,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.30 : 10,827.45 = 4,107.90 : x
  2. Step 2: Convert to fraction form
    7,218.30/10,827.45 = 4,107.90/x
  3. Step 3: Cross multiply
    7,218.30x = 10,827.45 × 4,107.90
  4. Step 4: Simplify right side
    7,218.30x = 44,478,081.86
  5. Step 5: Solve for x
    x = 44,478,081.86/7,218.30
  6. Step 6: Final answer
    x = 6,161.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.