Home / 8,072.08-12,111.23-3,145.20

Finding the Fourth Proportional to 8,072.08, 12,111.23 and 3,145.20

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Solution

The fourth proportional to 8,072.08, 12,111.23 and 3,145.20 is: 4,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.08 : 12,111.23 = 3,145.20 : x
  2. Step 2: Convert to fraction form
    8,072.08/12,111.23 = 3,145.20/x
  3. Step 3: Cross multiply
    8,072.08x = 12,111.23 × 3,145.20
  4. Step 4: Simplify right side
    8,072.08x = 38,092,240.60
  5. Step 5: Solve for x
    x = 38,092,240.60/8,072.08
  6. Step 6: Final answer
    x = 4,719.01

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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.