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Finding the Fourth Proportional to 2,650.61, 3,656.59 and 1,812.49

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Solution

The fourth proportional to 2,650.61, 3,656.59 and 1,812.49 is: 2,500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.61 : 3,656.59 = 1,812.49 : x
  2. Step 2: Convert to fraction form
    2,650.61/3,656.59 = 1,812.49/x
  3. Step 3: Cross multiply
    2,650.61x = 3,656.59 × 1,812.49
  4. Step 4: Simplify right side
    2,650.61x = 6,627,537.34
  5. Step 5: Solve for x
    x = 6,627,537.34/2,650.61
  6. Step 6: Final answer
    x = 2,500.38

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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.