Home / 9,315.43-13,972.78-3,159.43

Finding the Fourth Proportional to 9,315.43, 13,972.78 and 3,159.43

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Solution

The fourth proportional to 9,315.43, 13,972.78 and 3,159.43 is: 4,739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.43 : 13,972.78 = 3,159.43 : x
  2. Step 2: Convert to fraction form
    9,315.43/13,972.78 = 3,159.43/x
  3. Step 3: Cross multiply
    9,315.43x = 13,972.78 × 3,159.43
  4. Step 4: Simplify right side
    9,315.43x = 44,146,020.32
  5. Step 5: Solve for x
    x = 44,146,020.32/9,315.43
  6. Step 6: Final answer
    x = 4,739.02

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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.