Home / 2,992.60-4,129.92-1,666.32

Finding the Fourth Proportional to 2,992.60, 4,129.92 and 1,666.32

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Solution

The fourth proportional to 2,992.60, 4,129.92 and 1,666.32 is: 2,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.60 : 4,129.92 = 1,666.32 : x
  2. Step 2: Convert to fraction form
    2,992.60/4,129.92 = 1,666.32/x
  3. Step 3: Cross multiply
    2,992.60x = 4,129.92 × 1,666.32
  4. Step 4: Simplify right side
    2,992.60x = 6,881,768.29
  5. Step 5: Solve for x
    x = 6,881,768.29/2,992.60
  6. Step 6: Final answer
    x = 2,299.60

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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.