Home / 1,573.14-2,170.98-909.94

Finding the Fourth Proportional to 1,573.14, 2,170.98 and 909.94

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Solution

The fourth proportional to 1,573.14, 2,170.98 and 909.94 is: 1,255.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.14 : 2,170.98 = 909.94 : x
  2. Step 2: Convert to fraction form
    1,573.14/2,170.98 = 909.94/x
  3. Step 3: Cross multiply
    1,573.14x = 2,170.98 × 909.94
  4. Step 4: Simplify right side
    1,573.14x = 1,975,461.54
  5. Step 5: Solve for x
    x = 1,975,461.54/1,573.14
  6. Step 6: Final answer
    x = 1,255.74

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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.