Home / 3,938.57-5,909.30-1,885.13

Finding the Fourth Proportional to 3,938.57, 5,909.30 and 1,885.13

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Solution

The fourth proportional to 3,938.57, 5,909.30 and 1,885.13 is: 2,828.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.57 : 5,909.30 = 1,885.13 : x
  2. Step 2: Convert to fraction form
    3,938.57/5,909.30 = 1,885.13/x
  3. Step 3: Cross multiply
    3,938.57x = 5,909.30 × 1,885.13
  4. Step 4: Simplify right side
    3,938.57x = 11,139,759.74
  5. Step 5: Solve for x
    x = 11,139,759.74/3,938.57
  6. Step 6: Final answer
    x = 2,828.38

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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.