Home / 3,109.60-4,664.40-2,125.45

Finding the Fourth Proportional to 3,109.60, 4,664.40 and 2,125.45

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Solution

The fourth proportional to 3,109.60, 4,664.40 and 2,125.45 is: 3,188.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.60 : 4,664.40 = 2,125.45 : x
  2. Step 2: Convert to fraction form
    3,109.60/4,664.40 = 2,125.45/x
  3. Step 3: Cross multiply
    3,109.60x = 4,664.40 × 2,125.45
  4. Step 4: Simplify right side
    3,109.60x = 9,913,948.98
  5. Step 5: Solve for x
    x = 9,913,948.98/3,109.60
  6. Step 6: Final answer
    x = 3,188.18

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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.