Home / 10,605.12-15,907.88-3,209.55

Finding the Fourth Proportional to 10,605.12, 15,907.88 and 3,209.55

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Solution

The fourth proportional to 10,605.12, 15,907.88 and 3,209.55 is: 4,814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.12 : 15,907.88 = 3,209.55 : x
  2. Step 2: Convert to fraction form
    10,605.12/15,907.88 = 3,209.55/x
  3. Step 3: Cross multiply
    10,605.12x = 15,907.88 × 3,209.55
  4. Step 4: Simplify right side
    10,605.12x = 51,057,040.67
  5. Step 5: Solve for x
    x = 51,057,040.67/10,605.12
  6. Step 6: Final answer
    x = 4,814.38

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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.