Home / 8,148.72-12,221.52-2,305.12

Finding the Fourth Proportional to 8,148.72, 12,221.52 and 2,305.12

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Solution

The fourth proportional to 8,148.72, 12,221.52 and 2,305.12 is: 3,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,148.72 : 12,221.52 = 2,305.12 : x
  2. Step 2: Convert to fraction form
    8,148.72/12,221.52 = 2,305.12/x
  3. Step 3: Cross multiply
    8,148.72x = 12,221.52 × 2,305.12
  4. Step 4: Simplify right side
    8,148.72x = 28,172,070.18
  5. Step 5: Solve for x
    x = 28,172,070.18/8,148.72
  6. Step 6: Final answer
    x = 3,457.24

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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.