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Finding the Fourth Proportional to 5,184, 7,777.22 and 1,721.26

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Solution

The fourth proportional to 5,184, 7,777.22 and 1,721.26 is: 2,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,184 : 7,777.22 = 1,721.26 : x
  2. Step 2: Convert to fraction form
    5,184/7,777.22 = 1,721.26/x
  3. Step 3: Cross multiply
    5,184x = 7,777.22 × 1,721.26
  4. Step 4: Simplify right side
    5,184x = 13,386,617.70
  5. Step 5: Solve for x
    x = 13,386,617.70/5,184
  6. Step 6: Final answer
    x = 2,582.30

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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.