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Finding the Fourth Proportional to 3,645.84, 5,031.81 and 2,655.62

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Solution

The fourth proportional to 3,645.84, 5,031.81 and 2,655.62 is: 3,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.84 : 5,031.81 = 2,655.62 : x
  2. Step 2: Convert to fraction form
    3,645.84/5,031.81 = 2,655.62/x
  3. Step 3: Cross multiply
    3,645.84x = 5,031.81 × 2,655.62
  4. Step 4: Simplify right side
    3,645.84x = 13,362,575.27
  5. Step 5: Solve for x
    x = 13,362,575.27/3,645.84
  6. Step 6: Final answer
    x = 3,665.16

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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.