Home / 2,992.13-4,129.40-1,666.08

Finding the Fourth Proportional to 2,992.13, 4,129.40 and 1,666.08

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Solution

The fourth proportional to 2,992.13, 4,129.40 and 1,666.08 is: 2,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.13 : 4,129.40 = 1,666.08 : x
  2. Step 2: Convert to fraction form
    2,992.13/4,129.40 = 1,666.08/x
  3. Step 3: Cross multiply
    2,992.13x = 4,129.40 × 1,666.08
  4. Step 4: Simplify right side
    2,992.13x = 6,879,902.42
  5. Step 5: Solve for x
    x = 6,879,902.42/2,992.13
  6. Step 6: Final answer
    x = 2,299.34

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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.