Home / 1,573.25-2,170.94-909.99

Finding the Fourth Proportional to 1,573.25, 2,170.94 and 909.99

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Solution

The fourth proportional to 1,573.25, 2,170.94 and 909.99 is: 1,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.25 : 2,170.94 = 909.99 : x
  2. Step 2: Convert to fraction form
    1,573.25/2,170.94 = 909.99/x
  3. Step 3: Cross multiply
    1,573.25x = 2,170.94 × 909.99
  4. Step 4: Simplify right side
    1,573.25x = 1,975,529.14
  5. Step 5: Solve for x
    x = 1,975,529.14/1,573.25
  6. Step 6: Final answer
    x = 1,255.70

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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.