Home / 8,668.16-12,969.74-5,145.27

Finding the Fourth Proportional to 8,668.16, 12,969.74 and 5,145.27

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Solution

The fourth proportional to 8,668.16, 12,969.74 and 5,145.27 is: 7,698.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.16 : 12,969.74 = 5,145.27 : x
  2. Step 2: Convert to fraction form
    8,668.16/12,969.74 = 5,145.27/x
  3. Step 3: Cross multiply
    8,668.16x = 12,969.74 × 5,145.27
  4. Step 4: Simplify right side
    8,668.16x = 66,732,814.13
  5. Step 5: Solve for x
    x = 66,732,814.13/8,668.16
  6. Step 6: Final answer
    x = 7,698.61

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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.