Home / 5,300.80-7,940.40-2,705.20

Finding the Fourth Proportional to 5,300.80, 7,940.40 and 2,705.20

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Solution

The fourth proportional to 5,300.80, 7,940.40 and 2,705.20 is: 4,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,300.80 : 7,940.40 = 2,705.20 : x
  2. Step 2: Convert to fraction form
    5,300.80/7,940.40 = 2,705.20/x
  3. Step 3: Cross multiply
    5,300.80x = 7,940.40 × 2,705.20
  4. Step 4: Simplify right side
    5,300.80x = 21,480,370.08
  5. Step 5: Solve for x
    x = 21,480,370.08/5,300.80
  6. Step 6: Final answer
    x = 4,052.29

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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.