Home / 5,340.90-7,999.20-2,740.80

Finding the Fourth Proportional to 5,340.90, 7,999.20 and 2,740.80

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Solution

The fourth proportional to 5,340.90, 7,999.20 and 2,740.80 is: 4,104.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,340.90 : 7,999.20 = 2,740.80 : x
  2. Step 2: Convert to fraction form
    5,340.90/7,999.20 = 2,740.80/x
  3. Step 3: Cross multiply
    5,340.90x = 7,999.20 × 2,740.80
  4. Step 4: Simplify right side
    5,340.90x = 21,924,207.36
  5. Step 5: Solve for x
    x = 21,924,207.36/5,340.90
  6. Step 6: Final answer
    x = 4,104.96

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1.5x scale

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.