Home / 7,209.30-10,809.58-3,507.80

Finding the Fourth Proportional to 7,209.30, 10,809.58 and 3,507.80

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Solution

The fourth proportional to 7,209.30, 10,809.58 and 3,507.80 is: 5,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.30 : 10,809.58 = 3,507.80 : x
  2. Step 2: Convert to fraction form
    7,209.30/10,809.58 = 3,507.80/x
  3. Step 3: Cross multiply
    7,209.30x = 10,809.58 × 3,507.80
  4. Step 4: Simplify right side
    7,209.30x = 37,917,844.72
  5. Step 5: Solve for x
    x = 37,917,844.72/7,209.30
  6. Step 6: Final answer
    x = 5,259.57

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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.