Home / 1,627.39-2,245.77-928.75

Finding the Fourth Proportional to 1,627.39, 2,245.77 and 928.75

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Solution

The fourth proportional to 1,627.39, 2,245.77 and 928.75 is: 1,281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.39 : 2,245.77 = 928.75 : x
  2. Step 2: Convert to fraction form
    1,627.39/2,245.77 = 928.75/x
  3. Step 3: Cross multiply
    1,627.39x = 2,245.77 × 928.75
  4. Step 4: Simplify right side
    1,627.39x = 2,085,758.89
  5. Step 5: Solve for x
    x = 2,085,758.89/1,627.39
  6. Step 6: Final answer
    x = 1,281.66

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Half scale
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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.