Home / 8,668.62-11,959.65-5,131.35

Finding the Fourth Proportional to 8,668.62, 11,959.65 and 5,131.35

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Solution

The fourth proportional to 8,668.62, 11,959.65 and 5,131.35 is: 7,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.62 : 11,959.65 = 5,131.35 : x
  2. Step 2: Convert to fraction form
    8,668.62/11,959.65 = 5,131.35/x
  3. Step 3: Cross multiply
    8,668.62x = 11,959.65 × 5,131.35
  4. Step 4: Simplify right side
    8,668.62x = 61,369,150.03
  5. Step 5: Solve for x
    x = 61,369,150.03/8,668.62
  6. Step 6: Final answer
    x = 7,079.46

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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.