Home / 8,079.30-12,118.41-2,155.74

Finding the Fourth Proportional to 8,079.30, 12,118.41 and 2,155.74

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Solution

The fourth proportional to 8,079.30, 12,118.41 and 2,155.74 is: 3,233.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.30 : 12,118.41 = 2,155.74 : x
  2. Step 2: Convert to fraction form
    8,079.30/12,118.41 = 2,155.74/x
  3. Step 3: Cross multiply
    8,079.30x = 12,118.41 × 2,155.74
  4. Step 4: Simplify right side
    8,079.30x = 26,124,141.17
  5. Step 5: Solve for x
    x = 26,124,141.17/8,079.30
  6. Step 6: Final answer
    x = 3,233.47

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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.