Home / 3,587.10-5,381.19-1,121.40

Finding the Fourth Proportional to 3,587.10, 5,381.19 and 1,121.40

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Solution

The fourth proportional to 3,587.10, 5,381.19 and 1,121.40 is: 1,682.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.10 : 5,381.19 = 1,121.40 : x
  2. Step 2: Convert to fraction form
    3,587.10/5,381.19 = 1,121.40/x
  3. Step 3: Cross multiply
    3,587.10x = 5,381.19 × 1,121.40
  4. Step 4: Simplify right side
    3,587.10x = 6,034,466.47
  5. Step 5: Solve for x
    x = 6,034,466.47/3,587.10
  6. Step 6: Final answer
    x = 1,682.27

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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.