Home / 8,318.88-11,455.56-7,434.36

Finding the Fourth Proportional to 8,318.88, 11,455.56 and 7,434.36

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Solution

The fourth proportional to 8,318.88, 11,455.56 and 7,434.36 is: 10,237.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.88 : 11,455.56 = 7,434.36 : x
  2. Step 2: Convert to fraction form
    8,318.88/11,455.56 = 7,434.36/x
  3. Step 3: Cross multiply
    8,318.88x = 11,455.56 × 7,434.36
  4. Step 4: Simplify right side
    8,318.88x = 85,164,757.04
  5. Step 5: Solve for x
    x = 85,164,757.04/8,318.88
  6. Step 6: Final answer
    x = 10,237.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.