Home / 9,311.40-13,968.45-4,381.20

Finding the Fourth Proportional to 9,311.40, 13,968.45 and 4,381.20

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Solution

The fourth proportional to 9,311.40, 13,968.45 and 4,381.20 is: 6,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.40 : 13,968.45 = 4,381.20 : x
  2. Step 2: Convert to fraction form
    9,311.40/13,968.45 = 4,381.20/x
  3. Step 3: Cross multiply
    9,311.40x = 13,968.45 × 4,381.20
  4. Step 4: Simplify right side
    9,311.40x = 61,198,573.14
  5. Step 5: Solve for x
    x = 61,198,573.14/9,311.40
  6. Step 6: Final answer
    x = 6,572.44

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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.