Home / 5,090.28-7,636.50-1,805.76

Finding the Fourth Proportional to 5,090.28, 7,636.50 and 1,805.76

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Solution

The fourth proportional to 5,090.28, 7,636.50 and 1,805.76 is: 2,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.28 : 7,636.50 = 1,805.76 : x
  2. Step 2: Convert to fraction form
    5,090.28/7,636.50 = 1,805.76/x
  3. Step 3: Cross multiply
    5,090.28x = 7,636.50 × 1,805.76
  4. Step 4: Simplify right side
    5,090.28x = 13,789,686.24
  5. Step 5: Solve for x
    x = 13,789,686.24/5,090.28
  6. Step 6: Final answer
    x = 2,709.02

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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.