Home / 2,151.31-2,968.75-1,207.02

Finding the Fourth Proportional to 2,151.31, 2,968.75 and 1,207.02

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Solution

The fourth proportional to 2,151.31, 2,968.75 and 1,207.02 is: 1,665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.31 : 2,968.75 = 1,207.02 : x
  2. Step 2: Convert to fraction form
    2,151.31/2,968.75 = 1,207.02/x
  3. Step 3: Cross multiply
    2,151.31x = 2,968.75 × 1,207.02
  4. Step 4: Simplify right side
    2,151.31x = 3,583,340.63
  5. Step 5: Solve for x
    x = 3,583,340.63/2,151.31
  6. Step 6: Final answer
    x = 1,665.66

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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.