Home / 3,090.18-4,262.04-1,911.90

Finding the Fourth Proportional to 3,090.18, 4,262.04 and 1,911.90

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Solution

The fourth proportional to 3,090.18, 4,262.04 and 1,911.90 is: 2,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.18 : 4,262.04 = 1,911.90 : x
  2. Step 2: Convert to fraction form
    3,090.18/4,262.04 = 1,911.90/x
  3. Step 3: Cross multiply
    3,090.18x = 4,262.04 × 1,911.90
  4. Step 4: Simplify right side
    3,090.18x = 8,148,594.28
  5. Step 5: Solve for x
    x = 8,148,594.28/3,090.18
  6. Step 6: Final answer
    x = 2,636.93

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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.