Home / 8,158.87-12,238.44-2,315.80

Finding the Fourth Proportional to 8,158.87, 12,238.44 and 2,315.80

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Solution

The fourth proportional to 8,158.87, 12,238.44 and 2,315.80 is: 3,473.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.87 : 12,238.44 = 2,315.80 : x
  2. Step 2: Convert to fraction form
    8,158.87/12,238.44 = 2,315.80/x
  3. Step 3: Cross multiply
    8,158.87x = 12,238.44 × 2,315.80
  4. Step 4: Simplify right side
    8,158.87x = 28,341,779.35
  5. Step 5: Solve for x
    x = 28,341,779.35/8,158.87
  6. Step 6: Final answer
    x = 3,473.74

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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.