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Finding the Fourth Proportional to 5,607.54, 7,741.68 and 3,721.68

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Solution

The fourth proportional to 5,607.54, 7,741.68 and 3,721.68 is: 5,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.54 : 7,741.68 = 3,721.68 : x
  2. Step 2: Convert to fraction form
    5,607.54/7,741.68 = 3,721.68/x
  3. Step 3: Cross multiply
    5,607.54x = 7,741.68 × 3,721.68
  4. Step 4: Simplify right side
    5,607.54x = 28,812,055.62
  5. Step 5: Solve for x
    x = 28,812,055.62/5,607.54
  6. Step 6: Final answer
    x = 5,138.09

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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.