Home / 5,131.77-7,698.74-1,668.75

Finding the Fourth Proportional to 5,131.77, 7,698.74 and 1,668.75

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Solution

The fourth proportional to 5,131.77, 7,698.74 and 1,668.75 is: 2,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.77 : 7,698.74 = 1,668.75 : x
  2. Step 2: Convert to fraction form
    5,131.77/7,698.74 = 1,668.75/x
  3. Step 3: Cross multiply
    5,131.77x = 7,698.74 × 1,668.75
  4. Step 4: Simplify right side
    5,131.77x = 12,847,272.38
  5. Step 5: Solve for x
    x = 12,847,272.38/5,131.77
  6. Step 6: Final answer
    x = 2,503.48

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Half scale
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Double scale
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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.