Home / 1,499.26-2,069.13-909.85

Finding the Fourth Proportional to 1,499.26, 2,069.13 and 909.85

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Solution

The fourth proportional to 1,499.26, 2,069.13 and 909.85 is: 1,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,499.26 : 2,069.13 = 909.85 : x
  2. Step 2: Convert to fraction form
    1,499.26/2,069.13 = 909.85/x
  3. Step 3: Cross multiply
    1,499.26x = 2,069.13 × 909.85
  4. Step 4: Simplify right side
    1,499.26x = 1,882,597.93
  5. Step 5: Solve for x
    x = 1,882,597.93/1,499.26
  6. Step 6: Final answer
    x = 1,255.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.