Home / 5,215.56-7,821.72-1,752

Finding the Fourth Proportional to 5,215.56, 7,821.72 and 1,752

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Solution

The fourth proportional to 5,215.56, 7,821.72 and 1,752 is: 2,627.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.56 : 7,821.72 = 1,752 : x
  2. Step 2: Convert to fraction form
    5,215.56/7,821.72 = 1,752/x
  3. Step 3: Cross multiply
    5,215.56x = 7,821.72 × 1,752
  4. Step 4: Simplify right side
    5,215.56x = 13,703,653.44
  5. Step 5: Solve for x
    x = 13,703,653.44/5,215.56
  6. Step 6: Final answer
    x = 2,627.46

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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.