Home / 8,942.36-12,340.50-5,165.68

Finding the Fourth Proportional to 8,942.36, 12,340.50 and 5,165.68

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Solution

The fourth proportional to 8,942.36, 12,340.50 and 5,165.68 is: 7,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.36 : 12,340.50 = 5,165.68 : x
  2. Step 2: Convert to fraction form
    8,942.36/12,340.50 = 5,165.68/x
  3. Step 3: Cross multiply
    8,942.36x = 12,340.50 × 5,165.68
  4. Step 4: Simplify right side
    8,942.36x = 63,747,074.04
  5. Step 5: Solve for x
    x = 63,747,074.04/8,942.36
  6. Step 6: Final answer
    x = 7,128.66

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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.