Home / 2,992.10-4,129.08-1,665.80

Finding the Fourth Proportional to 2,992.10, 4,129.08 and 1,665.80

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Solution

The fourth proportional to 2,992.10, 4,129.08 and 1,665.80 is: 2,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.10 : 4,129.08 = 1,665.80 : x
  2. Step 2: Convert to fraction form
    2,992.10/4,129.08 = 1,665.80/x
  3. Step 3: Cross multiply
    2,992.10x = 4,129.08 × 1,665.80
  4. Step 4: Simplify right side
    2,992.10x = 6,878,221.46
  5. Step 5: Solve for x
    x = 6,878,221.46/2,992.10
  6. Step 6: Final answer
    x = 2,298.79

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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.