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Finding the Fourth Proportional to 3,868.35, 5,335.03 and 2,609.20

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Solution

The fourth proportional to 3,868.35, 5,335.03 and 2,609.20 is: 3,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.35 : 5,335.03 = 2,609.20 : x
  2. Step 2: Convert to fraction form
    3,868.35/5,335.03 = 2,609.20/x
  3. Step 3: Cross multiply
    3,868.35x = 5,335.03 × 2,609.20
  4. Step 4: Simplify right side
    3,868.35x = 13,920,160.28
  5. Step 5: Solve for x
    x = 13,920,160.28/3,868.35
  6. Step 6: Final answer
    x = 3,598.47

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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.