Home / 2,151.25-2,968.70-1,207.04

Finding the Fourth Proportional to 2,151.25, 2,968.70 and 1,207.04

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Solution

The fourth proportional to 2,151.25, 2,968.70 and 1,207.04 is: 1,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.25 : 2,968.70 = 1,207.04 : x
  2. Step 2: Convert to fraction form
    2,151.25/2,968.70 = 1,207.04/x
  3. Step 3: Cross multiply
    2,151.25x = 2,968.70 × 1,207.04
  4. Step 4: Simplify right side
    2,151.25x = 3,583,318.77
  5. Step 5: Solve for x
    x = 3,583,318.77/2,151.25
  6. Step 6: Final answer
    x = 1,665.69

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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.