Home / 8,079.99-12,117.61-3,148.45

Finding the Fourth Proportional to 8,079.99, 12,117.61 and 3,148.45

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Solution

The fourth proportional to 8,079.99, 12,117.61 and 3,148.45 is: 4,721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.99 : 12,117.61 = 3,148.45 : x
  2. Step 2: Convert to fraction form
    8,079.99/12,117.61 = 3,148.45/x
  3. Step 3: Cross multiply
    8,079.99x = 12,117.61 × 3,148.45
  4. Step 4: Simplify right side
    8,079.99x = 38,151,662.85
  5. Step 5: Solve for x
    x = 38,151,662.85/8,079.99
  6. Step 6: Final answer
    x = 4,721.75

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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.