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Finding the Fourth Proportional to 2,512.74, 3,765.59 and 2,140.59

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Solution

The fourth proportional to 2,512.74, 3,765.59 and 2,140.59 is: 3,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.74 : 3,765.59 = 2,140.59 : x
  2. Step 2: Convert to fraction form
    2,512.74/3,765.59 = 2,140.59/x
  3. Step 3: Cross multiply
    2,512.74x = 3,765.59 × 2,140.59
  4. Step 4: Simplify right side
    2,512.74x = 8,060,595.74
  5. Step 5: Solve for x
    x = 8,060,595.74/2,512.74
  6. Step 6: Final answer
    x = 3,207.89

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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.