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Finding the Fourth Proportional to 5,777.84, 8,670 and 2,315.36

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Solution

The fourth proportional to 5,777.84, 8,670 and 2,315.36 is: 3,474.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777.84 : 8,670 = 2,315.36 : x
  2. Step 2: Convert to fraction form
    5,777.84/8,670 = 2,315.36/x
  3. Step 3: Cross multiply
    5,777.84x = 8,670 × 2,315.36
  4. Step 4: Simplify right side
    5,777.84x = 20,074,171.20
  5. Step 5: Solve for x
    x = 20,074,171.20/5,777.84
  6. Step 6: Final answer
    x = 3,474.34

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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.