Home / 1,971.08-2,720.09-1,086.94

Finding the Fourth Proportional to 1,971.08, 2,720.09 and 1,086.94

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Solution

The fourth proportional to 1,971.08, 2,720.09 and 1,086.94 is: 1,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.08 : 2,720.09 = 1,086.94 : x
  2. Step 2: Convert to fraction form
    1,971.08/2,720.09 = 1,086.94/x
  3. Step 3: Cross multiply
    1,971.08x = 2,720.09 × 1,086.94
  4. Step 4: Simplify right side
    1,971.08x = 2,956,574.62
  5. Step 5: Solve for x
    x = 2,956,574.62/1,971.08
  6. Step 6: Final answer
    x = 1,499.98

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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.