Home / 8,491.30-12,716.43-4,320.34

Finding the Fourth Proportional to 8,491.30, 12,716.43 and 4,320.34

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Solution

The fourth proportional to 8,491.30, 12,716.43 and 4,320.34 is: 6,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.30 : 12,716.43 = 4,320.34 : x
  2. Step 2: Convert to fraction form
    8,491.30/12,716.43 = 4,320.34/x
  3. Step 3: Cross multiply
    8,491.30x = 12,716.43 × 4,320.34
  4. Step 4: Simplify right side
    8,491.30x = 54,939,301.19
  5. Step 5: Solve for x
    x = 54,939,301.19/8,491.30
  6. Step 6: Final answer
    x = 6,470.07

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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.