Home / 5,109.60-7,664.40-1,822.80

Finding the Fourth Proportional to 5,109.60, 7,664.40 and 1,822.80

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Solution

The fourth proportional to 5,109.60, 7,664.40 and 1,822.80 is: 2,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.60 : 7,664.40 = 1,822.80 : x
  2. Step 2: Convert to fraction form
    5,109.60/7,664.40 = 1,822.80/x
  3. Step 3: Cross multiply
    5,109.60x = 7,664.40 × 1,822.80
  4. Step 4: Simplify right side
    5,109.60x = 13,970,668.32
  5. Step 5: Solve for x
    x = 13,970,668.32/5,109.60
  6. Step 6: Final answer
    x = 2,734.20

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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.