Home / 2,587.11-3,880.68-1,126.11

Finding the Fourth Proportional to 2,587.11, 3,880.68 and 1,126.11

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Solution

The fourth proportional to 2,587.11, 3,880.68 and 1,126.11 is: 1,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.11 : 3,880.68 = 1,126.11 : x
  2. Step 2: Convert to fraction form
    2,587.11/3,880.68 = 1,126.11/x
  3. Step 3: Cross multiply
    2,587.11x = 3,880.68 × 1,126.11
  4. Step 4: Simplify right side
    2,587.11x = 4,370,072.55
  5. Step 5: Solve for x
    x = 4,370,072.55/2,587.11
  6. Step 6: Final answer
    x = 1,689.17

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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.