Home / 7,072.19-9,759.84-4,087.76

Finding the Fourth Proportional to 7,072.19, 9,759.84 and 4,087.76

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Solution

The fourth proportional to 7,072.19, 9,759.84 and 4,087.76 is: 5,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.19 : 9,759.84 = 4,087.76 : x
  2. Step 2: Convert to fraction form
    7,072.19/9,759.84 = 4,087.76/x
  3. Step 3: Cross multiply
    7,072.19x = 9,759.84 × 4,087.76
  4. Step 4: Simplify right side
    7,072.19x = 39,895,892.63
  5. Step 5: Solve for x
    x = 39,895,892.63/7,072.19
  6. Step 6: Final answer
    x = 5,641.23

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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.