Home / 8,381.12-12,573.70-3,116.31

Finding the Fourth Proportional to 8,381.12, 12,573.70 and 3,116.31

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Solution

The fourth proportional to 8,381.12, 12,573.70 and 3,116.31 is: 4,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.12 : 12,573.70 = 3,116.31 : x
  2. Step 2: Convert to fraction form
    8,381.12/12,573.70 = 3,116.31/x
  3. Step 3: Cross multiply
    8,381.12x = 12,573.70 × 3,116.31
  4. Step 4: Simplify right side
    8,381.12x = 39,183,492.10
  5. Step 5: Solve for x
    x = 39,183,492.10/8,381.12
  6. Step 6: Final answer
    x = 4,675.21

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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.