Home / 6,810.80-10,205.40-5,709.20

Finding the Fourth Proportional to 6,810.80, 10,205.40 and 5,709.20

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Solution

The fourth proportional to 6,810.80, 10,205.40 and 5,709.20 is: 8,554.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,810.80 : 10,205.40 = 5,709.20 : x
  2. Step 2: Convert to fraction form
    6,810.80/10,205.40 = 5,709.20/x
  3. Step 3: Cross multiply
    6,810.80x = 10,205.40 × 5,709.20
  4. Step 4: Simplify right side
    6,810.80x = 58,264,669.68
  5. Step 5: Solve for x
    x = 58,264,669.68/6,810.80
  6. Step 6: Final answer
    x = 8,554.75

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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.