Home / 6,678.45-9,211.32-4,318.11

Finding the Fourth Proportional to 6,678.45, 9,211.32 and 4,318.11

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Solution

The fourth proportional to 6,678.45, 9,211.32 and 4,318.11 is: 5,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,678.45 : 9,211.32 = 4,318.11 : x
  2. Step 2: Convert to fraction form
    6,678.45/9,211.32 = 4,318.11/x
  3. Step 3: Cross multiply
    6,678.45x = 9,211.32 × 4,318.11
  4. Step 4: Simplify right side
    6,678.45x = 39,775,493.01
  5. Step 5: Solve for x
    x = 39,775,493.01/6,678.45
  6. Step 6: Final answer
    x = 5,955.80

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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.