Home / 4,976.20-7,461.60-1,687.60

Finding the Fourth Proportional to 4,976.20, 7,461.60 and 1,687.60

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Solution

The fourth proportional to 4,976.20, 7,461.60 and 1,687.60 is: 2,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,976.20 : 7,461.60 = 1,687.60 : x
  2. Step 2: Convert to fraction form
    4,976.20/7,461.60 = 1,687.60/x
  3. Step 3: Cross multiply
    4,976.20x = 7,461.60 × 1,687.60
  4. Step 4: Simplify right side
    4,976.20x = 12,592,196.16
  5. Step 5: Solve for x
    x = 12,592,196.16/4,976.20
  6. Step 6: Final answer
    x = 2,530.48

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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.