Home / 8,942.46-12,339.96-5,165.70

Finding the Fourth Proportional to 8,942.46, 12,339.96 and 5,165.70

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Solution

The fourth proportional to 8,942.46, 12,339.96 and 5,165.70 is: 7,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.46 : 12,339.96 = 5,165.70 : x
  2. Step 2: Convert to fraction form
    8,942.46/12,339.96 = 5,165.70/x
  3. Step 3: Cross multiply
    8,942.46x = 12,339.96 × 5,165.70
  4. Step 4: Simplify right side
    8,942.46x = 63,744,531.37
  5. Step 5: Solve for x
    x = 63,744,531.37/8,942.46
  6. Step 6: Final answer
    x = 7,128.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.