Home / 2,171.36-2,992.56-1,580.96

Finding the Fourth Proportional to 2,171.36, 2,992.56 and 1,580.96

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Solution

The fourth proportional to 2,171.36, 2,992.56 and 1,580.96 is: 2,178.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.36 : 2,992.56 = 1,580.96 : x
  2. Step 2: Convert to fraction form
    2,171.36/2,992.56 = 1,580.96/x
  3. Step 3: Cross multiply
    2,171.36x = 2,992.56 × 1,580.96
  4. Step 4: Simplify right side
    2,171.36x = 4,731,117.66
  5. Step 5: Solve for x
    x = 4,731,117.66/2,171.36
  6. Step 6: Final answer
    x = 2,178.87

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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.