Home / 8,071.18-12,107.54-3,141.21

Finding the Fourth Proportional to 8,071.18, 12,107.54 and 3,141.21

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Solution

The fourth proportional to 8,071.18, 12,107.54 and 3,141.21 is: 4,712.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.18 : 12,107.54 = 3,141.21 : x
  2. Step 2: Convert to fraction form
    8,071.18/12,107.54 = 3,141.21/x
  3. Step 3: Cross multiply
    8,071.18x = 12,107.54 × 3,141.21
  4. Step 4: Simplify right side
    8,071.18x = 38,032,325.72
  5. Step 5: Solve for x
    x = 38,032,325.72/8,071.18
  6. Step 6: Final answer
    x = 4,712.11

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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.