Home / 5,438.50-8,159.58-2,318.38

Finding the Fourth Proportional to 5,438.50, 8,159.58 and 2,318.38

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Solution

The fourth proportional to 5,438.50, 8,159.58 and 2,318.38 is: 3,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.50 : 8,159.58 = 2,318.38 : x
  2. Step 2: Convert to fraction form
    5,438.50/8,159.58 = 2,318.38/x
  3. Step 3: Cross multiply
    5,438.50x = 8,159.58 × 2,318.38
  4. Step 4: Simplify right side
    5,438.50x = 18,917,007.08
  5. Step 5: Solve for x
    x = 18,917,007.08/5,438.50
  6. Step 6: Final answer
    x = 3,478.35

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1.5x scale

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.