Home / 7,450.18-11,118.67-7,148.79

Finding the Fourth Proportional to 7,450.18, 11,118.67 and 7,148.79

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Solution

The fourth proportional to 7,450.18, 11,118.67 and 7,148.79 is: 10,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,450.18 : 11,118.67 = 7,148.79 : x
  2. Step 2: Convert to fraction form
    7,450.18/11,118.67 = 7,148.79/x
  3. Step 3: Cross multiply
    7,450.18x = 11,118.67 × 7,148.79
  4. Step 4: Simplify right side
    7,450.18x = 79,485,036.91
  5. Step 5: Solve for x
    x = 79,485,036.91/7,450.18
  6. Step 6: Final answer
    x = 10,668.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.