Home / 8,079.86-12,117.36-5,306.42

Finding the Fourth Proportional to 8,079.86, 12,117.36 and 5,306.42

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Solution

The fourth proportional to 8,079.86, 12,117.36 and 5,306.42 is: 7,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.86 : 12,117.36 = 5,306.42 : x
  2. Step 2: Convert to fraction form
    8,079.86/12,117.36 = 5,306.42/x
  3. Step 3: Cross multiply
    8,079.86x = 12,117.36 × 5,306.42
  4. Step 4: Simplify right side
    8,079.86x = 64,299,801.45
  5. Step 5: Solve for x
    x = 64,299,801.45/8,079.86
  6. Step 6: Final answer
    x = 7,958.03

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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.