Home / 7,378.24-11,045.76-6,387.88

Finding the Fourth Proportional to 7,378.24, 11,045.76 and 6,387.88

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Solution

The fourth proportional to 7,378.24, 11,045.76 and 6,387.88 is: 9,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.24 : 11,045.76 = 6,387.88 : x
  2. Step 2: Convert to fraction form
    7,378.24/11,045.76 = 6,387.88/x
  3. Step 3: Cross multiply
    7,378.24x = 11,045.76 × 6,387.88
  4. Step 4: Simplify right side
    7,378.24x = 70,558,989.39
  5. Step 5: Solve for x
    x = 70,558,989.39/7,378.24
  6. Step 6: Final answer
    x = 9,563.12

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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.