Home / 8,918.91-13,378.67-4,236.50

Finding the Fourth Proportional to 8,918.91, 13,378.67 and 4,236.50

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Solution

The fourth proportional to 8,918.91, 13,378.67 and 4,236.50 is: 6,354.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.91 : 13,378.67 = 4,236.50 : x
  2. Step 2: Convert to fraction form
    8,918.91/13,378.67 = 4,236.50/x
  3. Step 3: Cross multiply
    8,918.91x = 13,378.67 × 4,236.50
  4. Step 4: Simplify right side
    8,918.91x = 56,678,763.61
  5. Step 5: Solve for x
    x = 56,678,763.61/8,918.91
  6. Step 6: Final answer
    x = 6,354.90

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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.