Home / 5,630.72-8,440.21-2,118.31

Finding the Fourth Proportional to 5,630.72, 8,440.21 and 2,118.31

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Solution

The fourth proportional to 5,630.72, 8,440.21 and 2,118.31 is: 3,175.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.72 : 8,440.21 = 2,118.31 : x
  2. Step 2: Convert to fraction form
    5,630.72/8,440.21 = 2,118.31/x
  3. Step 3: Cross multiply
    5,630.72x = 8,440.21 × 2,118.31
  4. Step 4: Simplify right side
    5,630.72x = 17,878,962.79
  5. Step 5: Solve for x
    x = 17,878,962.79/5,630.72
  6. Step 6: Final answer
    x = 3,175.26

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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.