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Finding the Fourth Proportional to 3,714.76, 5,125.43 and 2,390.21

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Solution

The fourth proportional to 3,714.76, 5,125.43 and 2,390.21 is: 3,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,714.76 : 5,125.43 = 2,390.21 : x
  2. Step 2: Convert to fraction form
    3,714.76/5,125.43 = 2,390.21/x
  3. Step 3: Cross multiply
    3,714.76x = 5,125.43 × 2,390.21
  4. Step 4: Simplify right side
    3,714.76x = 12,250,834.39
  5. Step 5: Solve for x
    x = 12,250,834.39/3,714.76
  6. Step 6: Final answer
    x = 3,297.88

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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.