Home / 5,383.56-8,076.15-1,920

Finding the Fourth Proportional to 5,383.56, 8,076.15 and 1,920

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Solution

The fourth proportional to 5,383.56, 8,076.15 and 1,920 is: 2,880.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.56 : 8,076.15 = 1,920 : x
  2. Step 2: Convert to fraction form
    5,383.56/8,076.15 = 1,920/x
  3. Step 3: Cross multiply
    5,383.56x = 8,076.15 × 1,920
  4. Step 4: Simplify right side
    5,383.56x = 15,506,208
  5. Step 5: Solve for x
    x = 15,506,208/5,383.56
  6. Step 6: Final answer
    x = 2,880.29

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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.