Home / 2,151.32-2,968.58-1,207.11

Finding the Fourth Proportional to 2,151.32, 2,968.58 and 1,207.11

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Solution

The fourth proportional to 2,151.32, 2,968.58 and 1,207.11 is: 1,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.32 : 2,968.58 = 1,207.11 : x
  2. Step 2: Convert to fraction form
    2,151.32/2,968.58 = 1,207.11/x
  3. Step 3: Cross multiply
    2,151.32x = 2,968.58 × 1,207.11
  4. Step 4: Simplify right side
    2,151.32x = 3,583,396.57
  5. Step 5: Solve for x
    x = 3,583,396.57/2,151.32
  6. Step 6: Final answer
    x = 1,665.68

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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.