Home / 8,070.58-12,108.96-3,143.68

Finding the Fourth Proportional to 8,070.58, 12,108.96 and 3,143.68

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Solution

The fourth proportional to 8,070.58, 12,108.96 and 3,143.68 is: 4,716.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.58 : 12,108.96 = 3,143.68 : x
  2. Step 2: Convert to fraction form
    8,070.58/12,108.96 = 3,143.68/x
  3. Step 3: Cross multiply
    8,070.58x = 12,108.96 × 3,143.68
  4. Step 4: Simplify right side
    8,070.58x = 38,066,695.37
  5. Step 5: Solve for x
    x = 38,066,695.37/8,070.58
  6. Step 6: Final answer
    x = 4,716.72

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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.