Home / 4,285.20-5,915.16-3,175.10

Finding the Fourth Proportional to 4,285.20, 5,915.16 and 3,175.10

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Solution

The fourth proportional to 4,285.20, 5,915.16 and 3,175.10 is: 4,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.20 : 5,915.16 = 3,175.10 : x
  2. Step 2: Convert to fraction form
    4,285.20/5,915.16 = 3,175.10/x
  3. Step 3: Cross multiply
    4,285.20x = 5,915.16 × 3,175.10
  4. Step 4: Simplify right side
    4,285.20x = 18,781,194.94
  5. Step 5: Solve for x
    x = 18,781,194.94/4,285.20
  6. Step 6: Final answer
    x = 4,382.80

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.