Home / 9,135.40-13,703.10-3,289.90

Finding the Fourth Proportional to 9,135.40, 13,703.10 and 3,289.90

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Solution

The fourth proportional to 9,135.40, 13,703.10 and 3,289.90 is: 4,934.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.40 : 13,703.10 = 3,289.90 : x
  2. Step 2: Convert to fraction form
    9,135.40/13,703.10 = 3,289.90/x
  3. Step 3: Cross multiply
    9,135.40x = 13,703.10 × 3,289.90
  4. Step 4: Simplify right side
    9,135.40x = 45,081,828.69
  5. Step 5: Solve for x
    x = 45,081,828.69/9,135.40
  6. Step 6: Final answer
    x = 4,934.85

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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.