Home / 1,971.16-2,955.76-1,149.64

Finding the Fourth Proportional to 1,971.16, 2,955.76 and 1,149.64

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Solution

The fourth proportional to 1,971.16, 2,955.76 and 1,149.64 is: 1,723.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.16 : 2,955.76 = 1,149.64 : x
  2. Step 2: Convert to fraction form
    1,971.16/2,955.76 = 1,149.64/x
  3. Step 3: Cross multiply
    1,971.16x = 2,955.76 × 1,149.64
  4. Step 4: Simplify right side
    1,971.16x = 3,398,059.93
  5. Step 5: Solve for x
    x = 3,398,059.93/1,971.16
  6. Step 6: Final answer
    x = 1,723.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.