Home / 7,988.01-11,021.90-4,450.56

Finding the Fourth Proportional to 7,988.01, 11,021.90 and 4,450.56

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Solution

The fourth proportional to 7,988.01, 11,021.90 and 4,450.56 is: 6,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.01 : 11,021.90 = 4,450.56 : x
  2. Step 2: Convert to fraction form
    7,988.01/11,021.90 = 4,450.56/x
  3. Step 3: Cross multiply
    7,988.01x = 11,021.90 × 4,450.56
  4. Step 4: Simplify right side
    7,988.01x = 49,053,605.01
  5. Step 5: Solve for x
    x = 49,053,605.01/7,988.01
  6. Step 6: Final answer
    x = 6,140.90

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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.