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Finding the Fourth Proportional to 5,609.35, 7,742.07 and 3,721.06

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Solution

The fourth proportional to 5,609.35, 7,742.07 and 3,721.06 is: 5,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.35 : 7,742.07 = 3,721.06 : x
  2. Step 2: Convert to fraction form
    5,609.35/7,742.07 = 3,721.06/x
  3. Step 3: Cross multiply
    5,609.35x = 7,742.07 × 3,721.06
  4. Step 4: Simplify right side
    5,609.35x = 28,808,706.99
  5. Step 5: Solve for x
    x = 28,808,706.99/5,609.35
  6. Step 6: Final answer
    x = 5,135.84

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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.