Home / 7,679.63-11,521.33-2,485.50

Finding the Fourth Proportional to 7,679.63, 11,521.33 and 2,485.50

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Solution

The fourth proportional to 7,679.63, 11,521.33 and 2,485.50 is: 3,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.63 : 11,521.33 = 2,485.50 : x
  2. Step 2: Convert to fraction form
    7,679.63/11,521.33 = 2,485.50/x
  3. Step 3: Cross multiply
    7,679.63x = 11,521.33 × 2,485.50
  4. Step 4: Simplify right side
    7,679.63x = 28,636,259.50
  5. Step 5: Solve for x
    x = 28,636,259.50/7,679.63
  6. Step 6: Final answer
    x = 3,728.86

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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.