Home / 3,090.60-4,635.90-2,543.40

Finding the Fourth Proportional to 3,090.60, 4,635.90 and 2,543.40

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Solution

The fourth proportional to 3,090.60, 4,635.90 and 2,543.40 is: 3,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.60 : 4,635.90 = 2,543.40 : x
  2. Step 2: Convert to fraction form
    3,090.60/4,635.90 = 2,543.40/x
  3. Step 3: Cross multiply
    3,090.60x = 4,635.90 × 2,543.40
  4. Step 4: Simplify right side
    3,090.60x = 11,790,948.06
  5. Step 5: Solve for x
    x = 11,790,948.06/3,090.60
  6. Step 6: Final answer
    x = 3,815.10

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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.