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Finding the Fourth Proportional to 3,392.78, 4,681.49 and 2,066.90

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Solution

The fourth proportional to 3,392.78, 4,681.49 and 2,066.90 is: 2,851.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.78 : 4,681.49 = 2,066.90 : x
  2. Step 2: Convert to fraction form
    3,392.78/4,681.49 = 2,066.90/x
  3. Step 3: Cross multiply
    3,392.78x = 4,681.49 × 2,066.90
  4. Step 4: Simplify right side
    3,392.78x = 9,676,137.94
  5. Step 5: Solve for x
    x = 9,676,137.94/3,392.78
  6. Step 6: Final answer
    x = 2,851.98

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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.