Home / 8,455.40-12,687.06-3,774.92

Finding the Fourth Proportional to 8,455.40, 12,687.06 and 3,774.92

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Solution

The fourth proportional to 8,455.40, 12,687.06 and 3,774.92 is: 5,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.40 : 12,687.06 = 3,774.92 : x
  2. Step 2: Convert to fraction form
    8,455.40/12,687.06 = 3,774.92/x
  3. Step 3: Cross multiply
    8,455.40x = 12,687.06 × 3,774.92
  4. Step 4: Simplify right side
    8,455.40x = 47,892,636.54
  5. Step 5: Solve for x
    x = 47,892,636.54/8,455.40
  6. Step 6: Final answer
    x = 5,664.15

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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.