Home / 8,128.79-12,195.02-2,582.32

Finding the Fourth Proportional to 8,128.79, 12,195.02 and 2,582.32

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Solution

The fourth proportional to 8,128.79, 12,195.02 and 2,582.32 is: 3,874.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.79 : 12,195.02 = 2,582.32 : x
  2. Step 2: Convert to fraction form
    8,128.79/12,195.02 = 2,582.32/x
  3. Step 3: Cross multiply
    8,128.79x = 12,195.02 × 2,582.32
  4. Step 4: Simplify right side
    8,128.79x = 31,491,444.05
  5. Step 5: Solve for x
    x = 31,491,444.05/8,128.79
  6. Step 6: Final answer
    x = 3,874.06

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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.