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Finding the Fourth Proportional to 3,914.68, 5,402.10 and 2,342.68

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Solution

The fourth proportional to 3,914.68, 5,402.10 and 2,342.68 is: 3,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.68 : 5,402.10 = 2,342.68 : x
  2. Step 2: Convert to fraction form
    3,914.68/5,402.10 = 2,342.68/x
  3. Step 3: Cross multiply
    3,914.68x = 5,402.10 × 2,342.68
  4. Step 4: Simplify right side
    3,914.68x = 12,655,391.63
  5. Step 5: Solve for x
    x = 12,655,391.63/3,914.68
  6. Step 6: Final answer
    x = 3,232.80

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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.