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Finding the Fourth Proportional to 3,897.36, 5,373.54 and 3,392.46

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Solution

The fourth proportional to 3,897.36, 5,373.54 and 3,392.46 is: 4,677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.36 : 5,373.54 = 3,392.46 : x
  2. Step 2: Convert to fraction form
    3,897.36/5,373.54 = 3,392.46/x
  3. Step 3: Cross multiply
    3,897.36x = 5,373.54 × 3,392.46
  4. Step 4: Simplify right side
    3,897.36x = 18,229,519.51
  5. Step 5: Solve for x
    x = 18,229,519.51/3,897.36
  6. Step 6: Final answer
    x = 4,677.40

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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.