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Finding the Fourth Proportional to 2,992.04, 4,128.05 and 1,665.49

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Solution

The fourth proportional to 2,992.04, 4,128.05 and 1,665.49 is: 2,297.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.04 : 4,128.05 = 1,665.49 : x
  2. Step 2: Convert to fraction form
    2,992.04/4,128.05 = 1,665.49/x
  3. Step 3: Cross multiply
    2,992.04x = 4,128.05 × 1,665.49
  4. Step 4: Simplify right side
    2,992.04x = 6,875,197.03
  5. Step 5: Solve for x
    x = 6,875,197.03/2,992.04
  6. Step 6: Final answer
    x = 2,297.83

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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.