Home / 5,109.60-7,657.20-2,028

Finding the Fourth Proportional to 5,109.60, 7,657.20 and 2,028

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Solution

The fourth proportional to 5,109.60, 7,657.20 and 2,028 is: 3,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.60 : 7,657.20 = 2,028 : x
  2. Step 2: Convert to fraction form
    5,109.60/7,657.20 = 2,028/x
  3. Step 3: Cross multiply
    5,109.60x = 7,657.20 × 2,028
  4. Step 4: Simplify right side
    5,109.60x = 15,528,801.60
  5. Step 5: Solve for x
    x = 15,528,801.60/5,109.60
  6. Step 6: Final answer
    x = 3,039.14

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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.