Home / 4,921.72-7,386.76-2,455.80

Finding the Fourth Proportional to 4,921.72, 7,386.76 and 2,455.80

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Solution

The fourth proportional to 4,921.72, 7,386.76 and 2,455.80 is: 3,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.72 : 7,386.76 = 2,455.80 : x
  2. Step 2: Convert to fraction form
    4,921.72/7,386.76 = 2,455.80/x
  3. Step 3: Cross multiply
    4,921.72x = 7,386.76 × 2,455.80
  4. Step 4: Simplify right side
    4,921.72x = 18,140,405.21
  5. Step 5: Solve for x
    x = 18,140,405.21/4,921.72
  6. Step 6: Final answer
    x = 3,685.79

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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.